Jesus is the Son of God, God in flesh. He came as an infant born to a virgin named Mary, grew into a man, and lived a perfectly obedient life. His life wasn’t to be just a perfect life to follow, but to be a perfect sacrifice. Sacrifice means something given for another. Jesus lived perfectly, He was, and is God, His perfect life ended by His un-deserved death on a cross, which would actually be a substitution, for you. The reason He came was all men had been separated from the presence of God. This happened in the very beginning, when God created the earth, and men and women in it. He essentially said to them, “live in my presence, under my authority, and you will live forever.” The first man decided not too, and the bible tells us from his rebellion, we all now have this seed of rebellion, sin, inside of us. Just as the first man and woman were cast from God’s intimate presence, our destiny would be eternal separation from God. Unless, there would be some way to redeem, to bring us back, to renew us. The only way to do this was through a blood sacrifice, a perfect one, for all of us.
God said He would make a way. For a time, the sacrifice was an animal, through a ritual, giving temporary present satisfaction. This was pointing to what would eventually be the total satisfaction of our debt to God, a perfect life in a perfect man, capable of taking all the rebellion of sin upon Him. One person, a man, cannot do it. But one Man, God in the flesh, could.
This is Jesus. Jesus is, was, and will always be the sacrifice, the eternally glorified ONE, who died for the sins of all who believe. And He signified this totally in raising from the dead, showing He was God, and He is indeed the victor over sin.