Exodus 29:20

Then shalt thou kill the ram, and take of his blood, and put [it] upon the tip of the right ear of Aaron, and upon the tip of the right ear of his sons, and upon the thumb of their right hand, and upon the great toe of their right foot, and sprinkle the blood upon the altar round about.

Ver. 20. Upon the tip of the right ear.] To set the holy obedience required of them in all senses, actions, and motions. John 13:5,6 ; Joh 13:9