"...but we preach Christ crucified..." (1 Cor. 1:23).
What do you get when you cross God with man?
Jesus Christ is the Godman. This means that He is both God and man. Now, He is not half God and half man. No, He is wholly God and wholly man. And He is holy God and holy man - a man without sin.
This Jesus Christ gave Himself on the cross as a ransom for all. He who knew no sin became the sin of the whole world. He became all of your sins and mine, that we might become nothing but righteous before God.
All of this is contained in the words "Christ crucified."
Believe in the Godman Jesus Christ, and that through Him and His cross you have right now the forgiveness of sins, peace with God, and an open heaven!