King James Bible
"Neither shalt thou swear by thy head, because thou canst not make one hair white or black."
Jesus continues his teaching against oath-taking by forbidding even swearing by one's own head. In Jewish culture, people would invoke various things to validate their promises while avoiding God's name directly. This phrase exposes human powerlessness over even the smallest details of our own bodies. Jesus argues that since we cannot control something as basic as our hair color, we have no authority to pledge by our own heads, emphasizing that all power belongs to God alone.