Head, chest, left shoulder, right shoulder. This sequence is known as the "Sign of the Cross" and is a very common prayer gesture in Christianity. Every time you make the sign of the cross, first gently touch your forehead with your right hand to express "in the name of God." Then put your hands on your chest to say, "I believe in God." Then gently touch the left shoulder with the fingertips of the right hand, and then move to the right shoulder to express "Father, Son, and Holy Spirit." This gesture is also often used to show respect and respect for the Christian faith.