The four Gospels record the eternal being, human ancestry, birth, life, and ministry, death, resurrection, and ascension of Jesus the Christ, Son of God and Son of Man. Taken together they present not a biography but a Person.
The fact that the four Gospels present a Person rather than a complete biography indicates the spirit in which they should be approached. It is more important to see and know Him who these narratives reveal than to try to piece together a full account of His life from these inspired records (John 21:25, “Now there are also many other things that Jesus did. Were every one of them to be written, I suppose that the world itself could not contain the books that would be written”). For some reason, God did not lead men to write a full biography of His Son.