When you look at the Bible, you will see that there are two main sections: the Old Testament and the New Testament. The Old Testament has the records of great prophets like Moses (Musa), Abraham (Ibrahim), David (Dawud), Solomon (Suleimana), and many others.
During his days on earth, Jesus chose twelve men to be his special teachers, called “apostles,” which means holy messengers. These twelve men followed Jesus through his years of teaching and learned from him. They saw his death and resurrection. Jesus made these men leaders after he was taken up into heaven.
He appointed twelve—designating them apostles—that they might be with him and that he might send them out to preach and to have authority to drive out demons. These are the twelve he appointed: Simon (to whom he gave the name Peter); James son of Zebedee and his brother John… Andrew, Philip, Bartholomew, Matthew, Thomas, James son of Alphaeus, Thaddaeus, Simon the Zealot and Judas Iscariot, who betrayed him. Mark. 3.14-19
Some of these and other followers wrote the New Testament. The life and teaching of Jesus are so important that God provided us four records of it in the Gospel. The Gospel was put down by the prophets and apostles Matthew, Mark, and John (not John the Baptizer, this was another man named John), along with a historian named Luke. The New Testament includes both the Gospel and the letters of Jesus’ prophets and apostles.
The Gospel record was written and kept safe by God through the holy prophets who were followers of Jesus. Jesus instructed them to listen and record what he said and did. He promised that the Holy Spirit of God would help them in this work. We can be sure that the Gospel record of Jesus found in the New Testament is the truthful record of his life and teachings.
“All this I have spoken while still with you. But the Counselor, the Holy Spirit, whom the Father will send in my name, will teach you all things and will remind you of everything I have said to you.” Jesus Christ in John 14.25-26
Jesus did many other miraculous signs in the presence of his disciples, which are not recorded in this book. But these are written that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name. John 20.30-31
Jesus is making a very great statement here. He means that he is like a message or letter sent by God to the whole world. He is the Spirit of God. This means that when we see Jesus we see what God is like. His nature is good and holy. He is the Messiah. This means he is the one promised by prophecy, and he himself is the Prophet of God.