12. My foot standeth in an even place:] That is, I stand in a sure place, so that I need not fear to fall. Bp. Wilson. David's earnest desire to serve God in the tabernacle, should stir us up to discharge the duties of religion with the same fervency. But the care this pious king took to purify himself before he went unto the altar of God, should convince us, that in order to appear in the presence of God, we should be pure, and lead a holy life. Lastly, we should join with David in the prayer which he offers up to God at the end of this Psalm, and beseech Him to preserve us from being like the wicked, 17. The troubles of my heart are enlarged:] This should rather be translated, "Relieve the sorrows of my heart." Dr. Kennicott, Bp. Lowth.