Psalm 146
Psalm 146:1–10 is a song that calls on Israel to praise the Lord and not put trust in princes. This will be a good song to sing before your sermon, perhaps a song of praise at the beginning of the worship service.
Psalm 115
Psalm 115:1–18 is a song which testifies to the nature of idols and calls upon God’s people to forsake idols and trust in the Lord. This would be a good song to sing, especially the second section (Psalm 115:9–18), after your sermon.
1 When Samuel became old, he made his sons judges over Israel.