Let Your Yes Be Yes
Matthew 5:33–37
“Again you have heard that it was said to the ancient ones, ‘You shall not make false vows, but shall perform to the Lord your vows,’ but I tell you, don’t swear at all: neither by heaven, for it is the throne of God; nor by the earth, for it is the footstool of his feet; nor by Jerusalem, for it is the city of the great King. Neither shall you swear by your head, for you can’t make one hair white or black. But let your ‘Yes’ be ‘Yes’ and your ‘No’ be ‘No.’ Whatever is more than these is of the evil one.
World English Bible
“I swear.” We say it when we sense we are not being believed. Children swear on their lives; adults swear on their mothers’ graves; first-century Jews swore by heaven, by earth, by Jerusalem, by their own heads: a whole stock exchange of oaths, some binding, some technically escapable, depending on what you swore by. The system existed for one reason: ordinary words had become cheap, so extraordinary words were needed to prop them up.
Jesus collapses the exchange. You cannot swear “by heaven” as though heaven were neutral collateral. It is God’s throne. Earth is His footstool, Jerusalem His city, and even your own head is not yours to wager; you cannot turn a single hair white or black. Every oath was borrowing against God’s property to cover a deficit of personal integrity. And the deficit is the real problem. If your plain yes needs reinforcement, the issue is not insufficient swearing. It is insufficient truthfulness.
So Jesus prescribes something almost shocking in its simplicity: let your yes be yes and your no be no. Become the kind of person whose bare word carries full weight. No fine print. No strategic exaggeration. No promises made with an exit already planned. Anything beyond that, He says, “is of the evil one”: strong language, until you remember that the devil’s native tongue is the lie, and every shading of the truth speaks a little of his accent.
Here is the formation question underneath the command: not “do I technically lie?” but “am I becoming a person who can be wholly trusted?” That kind of person is built slowly, in small transactions: the commitment kept after it became inconvenient, the story told without inflation, the plain no said instead of the soft yes you never meant to honor. Each one seems minor. Together they form a soul. The God who never breaks His word is shaping children who keep theirs.
Reflect
- Where do I inflate, shade, or strategically omit the truth to manage how people see me?
- Are there promises (to my family, my employer, my church, my God) that I made easily and am keeping poorly?
- Would the people who know me best say my plain word is enough? Why or why not?
Pray
Ask God to show you the places where your speech has grown cheap: the exaggerations, the soft commitments, the convenient omissions. Confess them plainly, without the very spin you are confessing. Then ask Him to make you, one kept promise at a time, a person whose yes simply means yes.