Now in the first year of Cyrus king of Persia, that the word of the LORD by the mouth of Jeremiah might be fulfilled, the LORD stirred up the spirit of Cyrus king of Persia, that he made a proclamation throughout all his kingdom, and put it also in writing, saying,
“Thus saith Cyrus king of Persia, The LORD God of heaven hath given me all the kingdoms of the earth; and he hath charged me to build him an house at Jerusalem, which is in Judah. Who is there among you of all his people? His God be with him, and let him go up to Jerusalem, which is in Judah, and build the house of the LORD God of Israel, (He is the God,) which is in Jerusalem. And whosoever remaineth in any place where he sojourneth, let the men of his place help him with silver, and with gold, and with goods, and with beasts, beside the freewill offering for the house of God that is in Jerusalem.”
Ezra 1:1-4
There are millions of Christians in the world, maybe billions (I pray so), that believe the Bible, written by 40 men of God, over a period of 14 hundred years, is indeed the written word of God. Why? It is a book of 66 books, we believe and trust that GOD inspired by the Holy Spirit, because it is consistent in its teaching, that the LORD is God, and there is no other God, but the LORD (YHWH or Jehovah). The Bible is also consistent in its history, and in its knowledge.
What does the above paragraph? The fulfilling of the words which GOD spoke through His prophet Jeremiah concerning when the people of Judah would return to their homeland. Notice how Cyrus the king of Persia is told by God to let the people go home, and he is obedient to the LORD and does so, thus fulfilling the prophecy and promise spoken by Jeremiah, and even the prophet Isaiah mentioned Cyrus 100 years or so before the events of their return to Jerusalem (Isaiah 44:28; 45:1).
Every promise and prophecy of God has come to pass, is happening now, or will come to pass in days yet ahead of us. Whether the promise/prophecy be positive or negative it shall come to pass.
The word of God is also profitable for doctrine, reproof, for correction, and instruction in righteousness, for living a life that pleases God (2 Timothy 3:16-17).
Every word spoken of the Messiah/Christ first coming was fulfilled in Jesus the Christ, the Son of the Living God. The prophecies concerning His first coming have been fulfilled. The prophecies/promises of the second coming of the Messiah/Christ will be fulfilled sometime in the not too distant future.
Do you know that Jesus the Christ of God, the greatest gift given to Adam kind, was sent from heaven to die for your sins and mine. He died on the cross, becoming sin for us, He was buried, and He rose up out of that grave alive forever more. Now when we believe in Him, turning from our sin, we shall not perish, but will have everlasting life (John 3:15-17). He became sin for us that we might become the righteousness of God, in Him (2 Corinthians 5:2).
If you believe in God, you will also believe in His Son. The Son came to earth to fulfill all of God’s word. He did.