The Ten Commandments

You Shall Not Bear False Witness

The ninth commandment protects the truth, and with it our neighbour’s good name: Thou shalt not bear false witness against thy neighbour. It was first spoken of the courtroom, where a lying witness could destroy an innocent life, but it reaches into all our speech. Because God is a God of truth, His people are to be people of truth, guarding one another’s reputation as carefully as we would guard our own.

“Thou shalt not bear false witness against thy neighbour.”Exodus 20:16

What it meant to Israel

Israel’s justice depended on honest testimony. There was no police force gathering evidence; a case turned on the word of witnesses, and a false witness could send an innocent person to ruin or death. So the command, Thou shalt not bear false witness against thy neighbour, stood as a pillar of the whole system of justice, and the law warned that a false witness should suffer the very penalty he sought to bring on his neighbour.

But the command went further than the court. It reflected the character of God Himself, who cannot lie, and it bound Israel to be a truthful people in all their dealings. To bear false witness was to wield the tongue as a weapon against a neighbour made in God’s image, and to betray the God of truth whose people they were. A community held together by covenant could not survive on lies; it needed the trust that only truthfulness can build.

Truthfulness, then, was not a private virtue but the mortar of the whole community. A people who could not trust one another’s word could not do justice, could not keep covenant, could not live as the people of a truthful God. The ninth commandment guarded that trust, making every Israelite a keeper of his neighbour’s good name and every tongue accountable to the God who hears all that is said.

What it forbids and what it requires

The commandment forbids lying, especially the lie that harms a neighbour: false testimony, slander, gossip, spreading rumours, twisting the truth, and the quiet betrayals of silence when a word could clear an innocent name. It forbids not only outright falsehood but every use of speech that unjustly damages another’s reputation or good standing.

Positively, it requires that we speak the truth, and that we protect and defend our neighbour’s good name. To keep this command is not merely to avoid lies but to be people whose word can be trusted, who refuse to pass on gossip, who put the best construction on others, and who speak up for the truth when it costs us. Scripture calls us to speak the truth in love, joining honesty to kindness, so that our words build up rather than tear down.

How Jesus deepened it

Jesus taught that our words flow from our hearts: out of the abundance of the heart the mouth speaketh, and that we shall give account for every idle word. He located the sin of the tongue in the character behind it, so that truthful speech becomes the fruit of a truthful heart, and He called His followers to a plain honesty so complete that a simple yes or no would be enough.

He also named the deepest source of lying. The devil, He said, is a liar, and the father of it, while He Himself came as the truth: I am the way, the truth, and the life. To lie is to side with the enemy of God against our neighbour; to speak truth is to walk in the light with Christ. In His teaching, the ninth commandment becomes a matter of whose likeness our words bear, the God of truth or the father of lies.

How we fall short, and are met by grace

This may be the commandment we break most constantly. We shade the truth to protect ourselves, exaggerate to impress, stay silent when honesty would cost us, and pass along the gossip that quietly stains a neighbour’s name. The tongue, Scripture says, is a fire, and no man can tame it. Measured against perfect truthfulness, we are all found wanting.

And so the ninth commandment drives us to the One who was falsely witnessed against and did not answer. At His trial many bare false witness against him, and He, the only truly innocent man, was condemned by lies so that liars might be forgiven. The truth Himself was silent under false testimony to save us. Grace meets our crooked words with a mercy that both forgives them and, over time, makes us truthful, as He is true.

How to live it today

To keep the ninth commandment is to become trustworthy in a world awash with spin and gossip. It means telling the truth even when a lie would be easier, keeping our promises, and refusing to pass along the rumour or the slander that would harm another’s name. It means guarding what we say about people who are not in the room.

It also means using our words to build up rather than tear down: to defend the absent, to give others the benefit of the doubt, to correct falsehood when we can, and to speak the truth in love rather than to wound. In an age of endless words and easy sharing, keeping this command asks us to weigh what we say and pass on, and to make our speech a place where truth and kindness meet.

In an age when a rumour can circle the world before the truth has risen, this command asks for unusual care about what we repeat. Before we pass along a word about another, we can ask whether it is true, whether it is kind, and whether it is ours to tell. Often the most faithful thing we can do is stay silent, refusing to be a link in the chain of gossip. To keep this command is to become a safe person, one in whose presence the absent are defended and the truth is loved. Little by little, as we practise honesty in the small things, a truthful tongue becomes the natural mark of a life being remade by the God who cannot lie.