New City CatechismSmakprov

Question: What does God require in the ninth and tenth commandments?

Answer: Ninth, that we do not lie or deceive, but speak the truth in love. Tenth, that we are content, not envying anyone or resenting what God has given them or us.

Commentary: Thou Shalt Not Bear False Witness Against Thy Neighbour. Now dost thou, most gracious Lord, instruct me in this commandment, how I should use my tongue towards my neighbour, and behave myself concerning his name, forbidding me to bear false witness; in the which thou forbiddest me all kinds of slandering, lying, hypocrisy, and untruth. And why?

Because, as "members of one body," thou wouldest we should "speak truth one to another," and be careful every one to cover other's infirmity, and with our tongue defend the names of others, even as we would that others should defend ours: so that in this commandment, as thou forbiddest me all kind of evil, perilous, calumnious and untrue speaking, so dost thou command to me all kind of godly, honest, and true report and talk….

O how great a good thing is this unto me! If we consider the hurt that cometh by untruth, and by words wherethrough many are deceived, easily may we see a wonderful benefit and care of thee for us in this commandment. Thou Shalt Not Covet…. Here, O most gracious Lord God, thou givest me the last commandment of thy law who having taught me what outward actions I shall avoid, that I do not thereby offend or undo my neighbour, as murder, adultery, theft, and false witness, now thou teachest me a rule for my heart, to order that well, from the abundance whereof all our works and words proceed, that I shall not covet any thing that is my neighbour's.

I know hereby that, if he have a fairer house than I, I may not wish for it; if he have a more beautiful wife than I, I may not desire her…. I may not desire to take from him his ox, nor his ass, no, not his dog, no, not the meanest thing he hath in his possession. So that, in the other commandments as thou hast forbidden all injuries and evil practice against my neighbour, so now thou chargest me to beware of thinking any evil thought against him…. The apostle said well, when he taught us, saying, "Cast all your care upon God, for he careth for you." It is true, I find it true: thus thou "carest for us," and wouldest have us to "care one for another."