Written by J. R. Miller (1840-1912), a Christian author, pastor, and editorial superintendent of the Presbyterian Board of Publication.
No prayer should be spoken more often by us than this prayer of David: “Keep the door of my lips.” There is nothing in all of life to which most of us give less attention than to our words. We let them fly from our lips as the leaves fly from the trees when the autumn winds blow. Many people seem to think that words are not important. They watch their acts, their conduct, and then give full license to their tongues. This is not right. A true Christian should have a Christian tongue.
Set a watch, O Lord, before my mouth; keep the door of my lips. [Psalm 141:3]