Here’s an opening litany based on verses from Psalm 115 and 116.
Opening Litany
(based on Psalm 115:18, Psalm 116:1,12-13)
Praise the Lord.
We love you, Lord, for you hear our voices;
you hear our cry for mercy.
How can we repay the Lord for all his goodness to us?
We will lift up the cup of salvation
and call on the name of the Lord.
We will fulfill our vows to the Lord,
in the presence of all his people.
— from the Resources for Your Ministry website.