How are Christ’s true followers to be distinguished from those of the devil?

“Whosoever is born of God doth not commit sin” (1 John iii, 9).

“He that committeth sin is of the devil” (8).

Judged by this standard what is the comparative strength of these sovereigns’ subjects?

“There is no man that sinneth not” (1 Kings viii, 46).

“There is not a just man upon earth” (Ecclesiastes vii, 20).

“There is none righteous, no, not one” (Romans iii, 10).