Revelation 2:17

It is a picturesque way of speaking of “justification.” To justify means “to declare ‘not guilty.’” Jurors in biblical days voted by putting a black stone (for guilty) or a white stone (for innocent/not guilty) in a receptacle. Revelation 2:17 puts in memorable style what the Bible says elsewhere, that God, the righteous Judge, has declared us not guilty of sin for Jesus’ sake (Romans 4:25).