Propitiation means: something that propitiates; specifically : an atoning sacrifice. God sent his Son as a sacrifice for our sins. Jesus is the gap between man and God. There is no other way to reach God except through his Son.
In this the love of God was made manifest among us, that God sent his only Son into the world, so that we might live through him. In this is love, not that we have loved God but that he loved us and sent his Son to be the propitiation for our sins. Beloved, if God so loved us, we also ought to love one another.
1 John 4:9-11
1 John 4:9-11