Charles H. Spurgeon on Psalms 141:3

Keep the door of my lips. That it move not creaking and complaining, as on rusty hinges, for want of the oil of joy and gladness. David had somewhat to do with his tongue, as we see (Ps 39:1,3); and when he had carted the ark, how untowardly he spake, as if the fault were more in God than himself, that there was such a breach made in Uzzah (1Ch 13:12). It was but need thus to pray. —John Trapp.