Albert Barnes Commentary Psalms 119:13

"With my lips have I declared All the ordinances of thy mouth." — Psalms 119:13 (ASV)

With my lips have I declared - That is, I have openly and publicly made your words known to others; I have defended and vindicated them.

All the judgments - The word "judgments" here means the same as statutes or laws. The idea is that he had been on the side of those laws and had endeavored by argument and persuasion to bring others under their influence.

We are not informed how he had done it. However, we have no reason to suppose that the author of the psalm was a minister of religion. If not, then we have here an example of what a man who does not claim to be a public teacher may do, and should do, in making known and defending divine truth.

Every man is as much bound to do this in his sphere as the minister of religion is in his. Private members of the church often have an opportunity of doing this to greater advantage than the ministers of the gospel possess.

Of thy mouth - With my mouth I speak those things which have proceeded from yours. I speak in your name; I declare your truth. It is not my own; it is yours.