Charles H. Spurgeon on Psalms 119:154

Plead my cause. I do not know that David meant, by calling upon God to plead his cause, anything more than that he should vindicate his innocence, and make it manifest to all, by delivering him out of the hand of all his enemies; but whether he had an ulterior reference or no, the word powerfully and sweetly recalls to every Christian heart him who was indeed to be the Advocate for poor sinners, even Jesus Christ the righteous, who is the propitiation for our sins. Barton Bouchier.