We live in an age characterised by profound weariness. If you ask the average person on the street how they are doing, the most common response you will hear is simply, "I am tired." We are physically fatigued, mentally drained by the endless cycle of news and demands, and all too often, spiritually depleted. We try to find rest in holidays, in entertainment, or in sleep, yet we frequently wake up just as exhausted as before.

But what if I told you that God foresaw the intense pressure of our modern lives? What if I told you that He provided a precise, supernatural mechanism for rest, rejuvenation, and power, a gift designed to sustain your spirit, your mind, and your physical body?

Today, we are looking at the Grace Gift of Speaking in Tongues.

Now, for some, that phrase immediately brings to mind confusing church services or theological debates. But I want us to strip away the traditions of men and look directly at what the Word of God actually says. To truly understand this, we cannot start in the Book of Acts. There is a vital principle in biblical study: the New Testament is concealed in the Old Testament, and the Old Testament is revealed in the New. Whatever marvellous truths we learn about in the New Testament almost always have their profound origins prophesied in the Old.

Let us turn first to the prophet Isaiah. In Isaiah chapter 28, God is addressing a people who are battered, weary, and failing. And in verses 11 and 12, the prophet delivers a fascinating, almost mysterious prophecy. He says:

"For with stammering lips and another tongue He will speak to this people, to whom He said, 'This is the rest with which you may cause the weary to rest,' and, 'This is the refreshing'..."

Notice the specific words the Holy Spirit uses through Isaiah. "Stammering lips and another tongue." Centuries before the Day of Pentecost, centuries before the upper room, God was already declaring that a new language was coming. But what was the primary purpose of this new tongue? Was it for a spectacular public display? No. God said, "This is the rest... This is the refreshing."

When you pray in the Spirit, you are tapping into the very rest of God. In a world full of anxiety and chronic stress, speaking in tongues is heaven’s prescribed therapy. It is the divine counter-measure to human exhaustion.

To understand how this rest actually functions, how it empowers us without draining our own human energy, we must look at another powerful Old Testament image. Turn your minds to the magnificent vision of the prophet Zechariah, found in chapter 4 of his book.

Zechariah is shown a vision of a solid gold lampstand, a menorah, with a bowl on top of it, and seven lamps on the stand. But this is no ordinary lampstand. Flanking it on either side are two living olive trees. Zechariah watches in absolute wonder as these olive trees empty their golden oil through two golden pipes directly into the bowl of the lampstand.

He asks the angel, "What are these?" And the angel gives him that famous response in verse 6: "This is the word of the Lord to Zerubbabel: 'Not by might nor by power, but by My Spirit,' says the Lord of hosts."

Consider the mechanics of this vision. In the natural world, a lamp requires constant human labour. The priests in the temple had to continually press the olives, extract the oil, carry it to the lamps, trim the wicks, and fill the bowls. If the priest grew tired and stopped his labour, the fire went out. It required human sweat, human might, and human power.

But in Zechariah’s vision, the human element is completely removed! The olive trees are alive. They are directly connected to the lampstand. The golden oil flows continuously, effortlessly, seamlessly from the living trees straight into the lamps. The fire burns brightly, yet the lamp expends zero effort. The supply is ceaseless.

This is a perfect picture of the New Covenant believer operating in the grace of the Holy Spirit. We are the lamp. The golden oil is the Holy Spirit. And when we pray in the Spirit, when we speak in tongues, we are opening the golden pipes. We cease our own human striving. We stop trying to figure out every problem with our limited intellect. We allow the ceaseless, life-giving oil of the Holy Spirit to flow into us, keeping our fire burning brightly without the burnout of human effort.

This Old Testament foundation perfectly sets the stage for the Apostle Paul’s groundbreaking revelation on speaking in tongues in the New Testament.

When we arrive at the letters of Paul, particularly 1 Corinthians chapter 14, we see the absolute necessity of this gift for our daily lives. But to understand Paul, we must first clear up a major source of confusion in the modern church.

Paul makes a very clear, very crucial distinction between two different applications of speaking in tongues: the public gift and the private prayer language. Failing to recognise this difference has robbed many believers of their rightful inheritance.

In 1 Corinthians 12 and 14, Paul discusses the public assembly of the church. He clearly states that if someone stands up in a church service and delivers a loud message in a tongue to the congregation, it must be accompanied by the interpretation of tongues. Why? Because the purpose of a public gathering is corporate edification. If a message is given in a tongue and no one interprets it, the congregation is left confused, and the unlearned visitor thinks everyone has lost their minds. In the public space, interpretation is essential so that everyone can understand and be blessed.

However, Paul also speaks emphatically about the private prayer language, which does not require an interpreter, because it is not directed at men.

Listen to 1 Corinthians 14, verse 2: "For he who speaks in a tongue does not speak to men but to God, for no one understands him; however, in the spirit he speaks mysteries."

And then, Paul delivers one of the most important verses on this topic, verse 4: "He who speaks in a tongue edifies himself."

To "edify" means to build up, like a master builder constructing a magnificent edifice. It is the spiritual equivalent of putting your mobile phone on the charger. When you plug it in, you don't need to understand the electrical engineering behind the lithium-ion battery; the phone simply receives the power and is recharged.

When you speak in your private prayer language, you are not speaking to the person next to you. You are speaking directly to God. You are opening the golden pipes of Zechariah’s vision, allowing the golden oil of the Holy Spirit to flow into your spirit, building you up, charging your spiritual battery, and bringing you into that profound rest Isaiah prophesied.

Paul loved this gift. He declared in 1 Corinthians 14:18, "I thank my God I speak with tongues more than you all." The man who wrote two-thirds of the New Testament, who possessed one of the greatest theological minds in human history, relied heavily on a prayer language that bypassed his intellect entirely.

Why is it so vital to bypass the intellect? Paul answers this in Romans chapter 8, verses 26 and 27: "Likewise the Spirit also helps in our weaknesses. For we do not know what we should pray for as we ought, but the Spirit Himself makes intercession for us with groanings which cannot be uttered."

Think about this deeply. Our greatest weakness in prayer is our limited knowledge. We do not know the future. We do not know the hidden intentions of the people we work with. We do not even fully understand what is happening inside our own physical bodies on a cellular level. When we pray in our native language, be it English, Afrikaans, Sotho, Zulu, we are restricted by our own limited understanding. We pray for what we think is the best outcome.

But when you switch over to your heavenly language, your mind takes a step back. The Holy Spirit takes over the intercession. He prays the perfect, unadulterated, hundred-percent accurate will of God over your life, your family, your business, and your health. The Holy Spirit never prays a miss. He never prays an anxious prayer. He never prays a fearful prayer.

And let us be clear: this edification is not merely abstract or strictly 'spiritual'. When Paul says, "He who speaks in a tongue edifies himself," he is talking about the whole self. Spirit, soul, and body.

In the soul, i.e. the realm of our mind and emotions, praying in tongues is a powerful weapon against anxiety. When the pressures of life, the deadlines at work, or the conflicts in our families threaten to overwhelm our minds, praying in the Spirit flushes out the stress. It realigns our chaotic thoughts with the peace of God.

In the body, this edification manifests as physical rejuvenation. It is the "refreshing" that Isaiah spoke of. Medical science recognises the toll that chronic stress takes on the human body. It breaks down our immune system, spikes our blood pressure, and accelerates ageing. The divine antidote is the deep, cellular rest that comes from the Holy Spirit. As the golden oil flows, it brings life, health, and vitality to our physical mortal bodies.

This is not a heavy burden. It is not a legalistic requirement or a religious chore. It is a Grace Gift. It is the unmerited favour of God, offering us a direct line to His peace and power.

As we leave here today, I want to challenge you to view speaking in tongues not through the lens of controversy, but through the lens of God's immense love for you. He saw your weariness. He saw the complex, impossible situations you would face. And He provided a way out.

Remember Isaiah’s promise of rest. Remember Zechariah’s vision of the golden oil flowing effortlessly. And remember Paul’s instruction that he who speaks in a tongue builds himself up.

You do not have to rely on your own might. You do not have to rely on your own power. You can tap into the ceaseless supply of the Spirit. Open your mouth, release your heavenly language, and let the golden oil of God’s grace bring you into His perfect rest today.