Mark 14:26
There are lots of things in Scripture that are not rules. But, sometimes they are really neat things to do anyway. For example, this verse says that Jesus and his disciples sang a hymn as they left. I like to end the Communion service with a hymn for this very reason. Though it is not a requirement, it is a really good idea.
Heavenly Father, thank you for all of the nice things that you have taught us. You really care for us and love us. It is amazing to think about! Your compassion and tenderness is truly wonderful. Thank you, you are worthy of all the praise. In the name of the Lord Jesus Christ I pray and praise you, Amen.