This prayer, A Collect for Saturdays, is from Morning Prayer two in the Book of Common Prayer, page 99.
Almighty God, who after the creation of the world rested from all your works and sanctified a day of rest for all your creatures: Grant that we, putting away all earthly anxieties, may be duly prepared for the service of your sanctuary, and that our rest here upon earth may be a preparation for the eternal rest promised to your people in heaven; through Jesus Christ our Lord. Amen.
Stay well. Be safe. Keep in touch.