Here’s an opening prayer based on Ephesians 2:20.
you have built your Church
on the foundation of the apostles and prophets,
Jesus Christ himself
being the chief cornerstone.
Join us together in unity of spirit
by their teaching,
that we may become a holy temple,
acceptable to you:
through Jesus Christ our Lord,
who lives and reigns
with you and the Holy Spirit,
one God, now and forever.
— from Starters for Sunday, posted on the website of the Church of Scotland.