Summary: The truthfulness of Christianity is made unbreakable because of Old Testament prophecy.
How do you present the Gospel to someone who places Christianity as one of many religious options? Such a person might be an agnostic, a secular humanist, a Jewish friend, or a person practicing any number of religious beliefs. We see our faith very differently from the way others see it. From their point of view, Christianity is one of many options. Most folks don’t oppose you practicing your Christian faith. They may in fact celebrate various aspects of your devotion to Christ. However, people in our tolerant society can become quite upset when we say that Christianity is Truth, and when we proclaim the Biblical teaching that everyone must believe in Christ in order to have a relationship with God. In their minds, lots of people have a relationship with God.
So, the battle is really a battle for Truth. If the Christian faith is not built upon Truth, then as the Apostle Paul says, “we are of all men most miserable” (1 Corinthians 15:19).
Here is the good news. We don’t have to simply believe or hope that we are following the Truth. While it is true that a person must believe the gospel “by faith,” it is also true that the evidence for the facts presented in the Gospel and throughout the Bible are substantially verifiable. The Bible is a book unlike any other book. It is far more than a repository of moral teachings. The Bible is filled with historical information about people, places and events - information that has been consistently verified through archeology, linguistics, and other sciences.
One of the most important confidence builders in the accuracy of the Bible is the abundant examples of predictive prophecy. Today, I would like to examine just a few of the Old Testament prophecies. This brief overview will demonstrate the following:
The truthfulness of Christianity is made unbreakable because of the Old Testament.
#1. Old Testament Prophecy Proves that the Bible is Supernatural (These examples are more thoroughly explained by Erwin Lutzer, Seven Reasons Why You Can Trust the Bible, 92 ff.)
The Prediction about Cyrus, King of Persia. Cyrus ruled from 559-530 BC. Cyrus released the Jews from Babylon in 538 BC, in the first year of his reign. Ezra records this release. “In the first year of Cyrus king of Persia, in order to fulfill the word of the Lord spoken by Jeremiah, the Lord moved the heart of Cyrus king of Persia to make a proclamation throughout his realm and to put it in writing:” (Ezra 1:1, NIV84)
But notice this prediction, given over 100 years earlier by Isaiah. ““This is what the Lord says— your Redeemer, who formed you in the womb: I am the Lord, who has made all things, who alone stretched out the heavens, who spread out the earth by myself, who foils the signs of false prophets and makes fools of diviners, who overthrows the learning of the wise and turns it into nonsense, who carries out the words of his servants and fulfills the predictions of his messengers, who says of Jerusalem, ‘It shall be inhabited,’ of the towns of Judah, ‘They shall be built,’ and of their ruins, ‘I will restore them,’ who says to the watery deep, ‘Be dry, and I will dry up your streams,’ who says of Cyrus, ‘He is my shepherd and will accomplish all that I please; he will say of Jerusalem, “Let it be rebuilt,” and of the temple, “Let its foundations be laid.” ’” (Isaiah 44:24–28, NIV84)