What was the purpose or effect of David's songs?
David's songs resounded to God's glory and served as words of praise and worship. They declared God's name among the brethren and offered praise in the midst of the congregation, directing honor to God. Thus their effect was to exalt the Lord and give voice to worship.
Les explains that David could put his thoughts into song, and those songs always resounded to God's glory as words of praise and worship. In Psalm 22, David says he will declare God's name to his brethren and praise God in the midst of the congregation. He then calls those who fear the Lord to praise, glorify, and fear Him, showing the songs' effect was to exalt God and lead others in worship.