Most Americans knew little about Alexander Hamilton—until 2015, when Lin-Manuel Miranda wrote his hit musical Hamilton. Now schoolchildren know Hamilton’s story by heart. They sing it to each other on the bus and at recess. He’s their favorite founding father.

God knows the power of music, and He told Moses to “write down this song and teach it to the Israelites and have them sing it” (Deuteronomy 31:19). God knew that long after Moses was gone, when He had brought Israel into the Promised Land, they would rebel and worship other gods. So He told Moses, “This song will testify against them, because it will not be forgotten by their descendants” (v. 21).

Songs are nearly impossible to forget, so it’s wise to be selective about what we sing. Some songs are just for fun, and that’s fine, but we benefit from songs that boast in Jesus and encourage our faith. One of the ways we “[make] the most of every opportunity” is when we speak “to one another with psalms, hymns, and songs from the Spirit.” So “sing and make music from your heart to the Lord” (see Ephesians 5:15–19).

Songs can be an indicator of the direction of our heart. Do the words make much of Jesus? Do we sing them wholeheartedly? What we sing will influence what we believe, so choose wisely and sing loudly.