Joshua 23:1–16 (ESV)

1 A long time afterward, when the LORD had given rest to Israel from all their surrounding enemies, and Joshua was old and well advanced in years,

Psalm 111

Psalm 111:1–10 talks about God’s covenant and promises. This will be a good song to sing with your sermon. You can maybe sing one half of the psalm before the sermon and the second half after the sermon.