Since every truth reveals God, we can be confident in talking about God to unbelievers. Frequently, they do not acknowledge God’s presence in their lives. But he is there. They rely on him. As Romans 1:21 reminds us, they “know” God, but they suppress that knowledge. They know God even in the process of saying anything that is true. The challenge for us is not to speak into a situation of complete ignorance, but to speak about God and his redemption in Christ. And then we pray that God may send the Holy Spirit to change their hearts. May he use our speech, our expressions of truths, in bringing unbelievers to faith.
The Attributes of Truth
Let us consider a particular example of a truth: 2 + 2 = 4. This is true everywhere, throughout the universe. It is true at all times. Its truth does not change over time.1 So truth has three key attributes: omnipresence (everywhere present), everlastingness (through all times), and unchangeability (immutability). Unchangeability is actually stronger than the mere fact of no change. We are saying not only that truth does not change but that it could not change. These three features of truth are attributes of God. God is omnipresent, everlasting, and unchangeable.
Truth as Eternal
We can make a further, more refined point about everlastingness. God is not subject to time or captured by time. He is superior to time. So we may say that he is eternal.2 The new heavens and the new earth, together with those who are redeemed in Christ, exist in the future without end, which means that they are everlasting. But they are still subject to time. God is different: he is superior to time; he is eternal. In addition, the truth that 2 + 2 = 4 seems to be different. It is specified by God. As such, it is not subject to change with the passing of time.
Tensed Truths
In some ways, mathematical truths like 2 + 2 = 4 are special, because they do not need to specify any one moment in time. Suppose, then, that we consider a truth that does have a time frame: Jesus Christ suffered under Pontius Pilate.3 The name Pontius Pilate fixes the time frame as the first century. There is also an implicit geographical frame, namely the location of Jerusalem, where Pontius Pilate was ruling. The verb “suffered” accordingly is in the past tense, to indicate that the time at which the event occurred preceded the time in which we are now living. There is a sense in which we might say that the truth about Jesus Christ suffering is not an “eternal” truth, but a tensed truth, a truth about a particular event. But notice that the truth about the event can be distinguished from the event itself. The event itself happened in the first century in Jerusalem, and is never to be repeated. We cannot see it directly before our eyes. But we can talk about whether it happened. (It did.) The affirmation that it happened is an affirmation that continues to be true, through all future times.
What about past times? What about the times before Jesus Christ came into the world? At those earlier times, the event of Christ’s crucifixion had not yet happened. But it was planned by God already:
. . . you were ransomed from the futile ways inherited from your forefathers, not with perishable things such as silver or gold, but with the precious blood of Christ, like that of a lamb without blemish or spot. He was foreknown before the foundation of the world but was made manifest in the last times for the sake of you. (1 Pet. 1:18–20)
. . . who saved us and called us to a holy calling, not because of our works but because of his own purpose and grace, which he gave us in Christ Jesus before the ages began. (2 Tim. 1:9) .
. . . for truly in this city there were gathered together against your holy servant Jesus, whom you anointed, both Herod and Pontius Pilate, along with the Gentiles and the peoples of Israel, to do whatever your hand and your plan had predestined to take place. (Acts 4:27–28)
Let us consider Acts 4:27–28 in more detail. The immediately preceding verses, Acts 4:25–26, cite Psalm 2, written a thousand years earlier, to confirm that the suffering and death of Christ were already planned by God.