Get your friend into the Word of God as fast as you can, but in the meantime let him know that you respect him even the differences that are between you.
The very secret of perennial revival and constant fruitfulness in the Christian life is to keep in constant touch with you living Lord by faith in terms of whatever situation you’re in.
The only answer to it is to yield myself completely to His Will — to be filled with His Spirit and let His Love start to grow and to conquer in my life.