A prayer rope (Greek: κομποσκοίνι, Russian: вервица, Romanian: mătănii, Macedonian and Serbian: бројаница / brojanica, Bulgarian: броеница) is a loop made up of complex knots, usually out of wool or silk, that is used by Eastern Orthodox Christians and Eastern Catholics to count the number of times they have prayed the Jesus Prayer: "Lord Jesus Christ, son of God, have mercy on me, a sinner."