I think He would preach about love every Sunday. He showed us how to make love our action and our reaction. He showed us by example. He forgave the sinner, fed the hungry, healed the sick. Made blind men see, and lame walk. Brought people back from the dead. He loved his enemies, and forgave them. He died for you and me.
He told us to love. Matthew 5:43-48; Luke 6:27-36; John 13:34 & 35; Romans 9:-21, 13:8-10;
Perhaps we should define ourselves using 1 Corinthians 13:4-7, as Christ defined Himself.