Romans 3:4

But every man a liar— Though every man should be a liar. For the next clause, see the note on Psalms 51:4. Dr. Taylor observes, that the Hebrew of that verse literally is, that thou mayest be just in thy speaking, and clean [that is clear] in thy judging. The speaking meant is, the word of promise which God made to David, 2 Samuel 7:12 and the judging referred to is the execution of the threatening denounced, 2 Samuel 12:9 and David owns, that if the threatening did not agree with the promise, God was clear from the charge of falsehood; the inconsistency must be assigned to his own wickedness. This is full to the Apostle's purpose. If the promise to Abraham was not made good, as the Jews expected, they might thank themselves for it. See Tillotson, vol. 12: serm. 8.