Because of Christ we now have peace. Christ made us both (Jews and non-Jews) one people. The Jews and the non-Jews were separated like there was a wall between them. They hated each other. But Christ broke down that wall of hate by {giving} his own body.
The Jewish law had many commands and rules. But Christ ended that law. Christ's purpose was to make the two groups of people (Jews and non-Jews) become one new people in him. By doing this Christ would make peace.
Through the cross Christ ended the hate between the two groups. And after the two groups became one body, Christ wanted to bring them both back to God. Christ did this with his death on the cross.
Christ came and preached peace to you people (non-Jews) who were far away {from God}. And he preached peace to the people (Jews) who were near {to God}.