Matthew 5:33

“Again, ye have heard that it hath been said by them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths:”

In this passage, Jesus addresses the practices of oath-taking, speech, and truthfulness. He references the instruction given to the people in ancient times: "Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths." This teaching is part of a broader discourse—the Sermon on the Mount—where Jesus explains how people living by Kingdom principles should relate to the Old Testament law.

He makes it clear that He is not setting aside God's law. Rather, He reveals that the people had lost the true heart of God's law beneath layers of religious tradition. With His teaching, Jesus brings the spirit of the law back to its primary place.

The Danger of Oaths

In the verses that follow, Jesus contrasts the tradition-bound system of His day with His own authoritative instruction, saying, "But I say unto you, Swear not at all." The religious culture of the time had developed an elaborate system of swearing by various created things—such as heaven, the earth, or Jerusalem—to validate one's words. Jesus points out the inherent limitation in this practice. Everything in creation is intimately connected to God's sovereign authority. Heaven is God's throne, the earth is His footstool, and Jerusalem is the city of the Great King. Furthermore, human power is so limited that a person cannot even change the color of a single hair on their head to make it white or black.

These profound examples demonstrate that humanity simply does not have the power or the right to leverage God's domain, or their own limited existence, as collateral for their truthfulness.

A Call to Absolute Integrity

Instead of relying on a complex system of oaths to prove one is telling the truth, Jesus establishes a pure standard of simple, unvarnished honesty. He commands believers to simply let their "Yes" be "Yes," and their "No" be "No."

The profound biblical wisdom here is that the internal character of a person should be so upright and truthful that their basic word is entirely sufficient and completely reliable. This passage calls believers to a life of absolute integrity in daily communication. A follower of Christ should not need to bolster their statements with grand vows or extra guarantees to convince others of their sincerity.

The warning attached to this teaching is serious: anything beyond a simple, truthful statement comes from the evil one. Speech that constantly requires extra validation is rooted in a culture of mistrust and deceit, a culture contrary to the nature of God. True righteousness involves an internal transformation where truth-telling is the unwavering standard, rendering all oaths unnecessary.