Each week, MJ takes the lectionary Psalm and builds a responsive call to worship out of it. She blogs them here: http://calltoworship.blogspot.
Here’s an example so you can see what its all about:
March 13 – Lent 1A: Psalm 32
Leader: Who will listen to our fears and save us in our time of trouble?
Children: Guilt makes you tired and sick and sad
All: When we confess our sin, the Lord is faithful and forgives us.
Leader: The Lord is near.
Children: He is our safe place.
All: The Lord’s unfailing love surrounds those who trust in him.