Theme 9Words, Truth & InfluenceDay 255
On the integrity of speech · The Sermon on the Mount

Let your yes be yes

Jesus on the reliable word

Jesus cuts through the elaborate world of oaths and vows with startling simplicity: let your Yes be Yes and your No, no; anything more comes from the evil one. In his day people swore by heaven, by the temple, by their own heads, calibrating how binding a promise was by what they swore on. Jesus abolishes the whole system. Your plain word should be so reliable that it needs no oath to prop it up.

For a leader, this is about the integrity of speech. When a person's yes means yes — when their word, plainly given, can simply be trusted — they need no elaborate guarantees, and people stop reading between the lines. The leader whose word is unreliable forces everyone to hedge, verify, and discount what he says. The leader whose yes is yes becomes a fixed point others can build on. Reliability of word is not a small virtue; it is the very foundation of trust.


He shall not break his word. He shall do according to all that proceeds out of his mouth.

Moses, on keeping your word — Numbers 30:2 (WEB)
The Principle

Reliability of word is the foundation of trust. When a leader’s plain yes means yes, people can build on it; when it does not, they hedge and discount everything he says.


Matthew 5:37

But let your Yes be Yes and your No, no. Whatever is more than these is of the evil one.


Jesus wanted a word so reliable it needs no oath. A leader formed here makes his plain speech trustworthy, so guarantees become unnecessary. The inner work is integrity of word, kept even when costly.

Make your plain word dependable, so people need not read between the lines. Keep your commitments precisely, even small ones. Become a fixed point others can build on by simply meaning what you say.

Leaders treat loose or inflated words as harmless and erode trust without noticing. The blind spot is not seeing that an unreliable yes forces everyone around them to hedge.

This Week's Practice

Track every commitment you make this week, including small ones, and keep each precisely, so your yes means yes.

The leader whose word is unreliable forces everyone to hedge and discount what he says; the leader whose yes means yes becomes a fixed point others can build on.

Can your plain word simply be believed, or do people have to read between the lines?

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