Psalm 107 is a song of thanksgiving, praising God for his redemption. This would be an appropriate song to sing in response to your sermon. Because the Lord has reconciled us to himself we are to praise him; all glory belongs to God.
o United Reformed Churches in North America (lyrics and sheet music) (audio)
1 Paul, an apostle not from men nor through man, but through Jesus Christ and God the Father, who raised him from the dead