In a nutshell, Jesus is the only child in the almighty god.Is he the son in the trinity.He is fully god and perfect man.He came to the world crucified died to redeem us humans, due to no one except his atonement for others.(for sinners cannot wash, any good deeds is useless.)Here is the "apostles creed" statements about him, and hope can help you understand him.

"I believe that our Lord Jesus Christ, the son of god;

Because the holy spirit are pregnant, born of the virgin Mary.

In this lost his suffering, was crucified, died and buried;

Down in the grave.On the third day risen from the dead;

He sat up to heaven, the right hand of father almighty god;

And will come from there to judge the living and,The dead。”