This prayer is from Tijs Jeuriaenss,
an Anabaptist martyr, burned at the stake in 1569.

Loving God,
You have baptised us into one body, and made us to drink the one Spirit.
Now grant us pure and faithful hearts that we may serve one another diligently in love, and find no cause to separate or divide. Call each of us to esteem others better than ourselves so we remain together in peace and joy. Grant these mercies to us and all your people.
Amen.