Matthew 5:36

Neither shalt thou swear by thy head,.... This also was a common form of swearing among the Jews: take a few instances. "If anyone is bound to his friend by an oath, and says to him, vow unto me בחיי ראשך, "by the life of thy head"; R.

Neither shalt thou swear by thy head - For these plain reasons: 1st. God commands thee not to do it. 2dly. Thou hast nothing which is thy own, and thou shouldst not pledge another’s property. 3dly. It never did, and never can, answer any good purpose. And 4thly. Being a breach of the law of God, it is the way to everlasting misery.

These verses deserve the closest attention of all readers of the Bible. A right understanding of the doctrines they contain lies at the very root of Christianity. The Lord Jesus here explains more fully the meaning of his words, “I came not to destroy the law but to fulfil.”

These verses deserve the closest attention of all readers of the Bible. A right understanding of the doctrines they contain lies at the very root of Christianity. The Lord Jesus here explains more fully the meaning of his words, “I came not to destroy the law but to fulfil.”He teaches us that his Gospel magnifies the Law, and exalts its authority: he shows us that the Law, as expounded by him, was a far more spiritual and heart-searching rule than most of the Jews supposed; and he proves this by selecting three commandments out of the ten as examples of what he means. He expounds the sixth commandment. Many thought that they kept this part of God’s law so long as they did not commit actual murder. The Lord Jesus shows that its requirements go much further than this. It condemns all angry and passionate language, and especially when used without a cause. Let us mark this well. We may be perfectly innocent of taking life, and yet be guilty of breaking the sixth commandment! He expounds the seventh commandment. Many supposed that they kept this part of God’s law if they did not actually commit adultery. The Lord Jesus teaches that we may break it in our thoughts, hearts and imaginations, even when our outward conduct is moral and correct. The God with whom we have to do looks far beyond actions. With him even a glance of the eye may be a sin! He expounds the third commandment. Many fancied that they kept this part of God’s law so long as they did not swear falsely, and performed their oaths. The Lord Jesus forbids all vain and light swearing altogether. All swearing by created things, even when God’s name is not brought forward—all calling upon God to witness, excepting on the most solemn occasions—is a great sin. Now all this is very instructive. It ought to raise very serious reflections in our minds: it calls us loudly to use great searching of heart.

Neither shalt thou swear by thy head - This was a common oath. The Gentiles also used this oath. To swear by the head was the same as to swear by the life; or to say, I will forfeit my life if what I say is not true. God is the Author of the life, and to swear by that, therefore, is the same as to swear by him. Because thou canst not make one hair white or black - You have no control or right over your own life. You cannot even change one single hair. God has all that control; and it is therefore improper and profane to pledge what is God’s gift and God’s property; and it is the same as swearing by God himself.