Psalm 115
Psalm 115:1–18 talks about the fact that the pagan gods are mere idols. This would be a good song to sing before your sermon, making it clear to God’s people that the gods of the nations are not gods at all.
Psalm 34
The end of Psalm 34:1–22 encourages God’s people by explaining what it means to fear the Lord. This would be a good song to sing after your sermon.
1 Joshua gathered all the tribes of Israel to Shechem and summoned the elders, the heads, the judges, and the officers of Israel. And they presented themselves before God.