Psalm 118
Psalm 118:1–29 is a song that begins by calling on Israel to trust in the Lord rather than princes. Seeing as Israel’s request for a king came from a fear of man and a desire to walk by faith and not by sight, this would be a good song to sing during your liturgy.
Psalm 2
Psalm 2:1–12 is a song which testifies to God’s King and our need to be reconciled to him. This might be a good song to sing after your sermon.
17 Now Samuel called the people together to the LORD at Mizpah.