II. And hereof we have an eminent and illustrious instance in this context, where the ground is laid of the following dis-i course. For introduction whereto, observe that — the title speaks the psalm a prayer of David. The matter of the prayer is, pre servation from his enemies. Not to go over the whole psalm, We have in the 13 and 14 verses, the sum of his desires, with a description of the persons he prays to be delivered from in which description every character is an argument to enforce his prayer.