John Calvin's Commentary on the Bible - Psalms 138:1
Verse 1 1.I will praise thee with my whole heart As David had been honored to receive distinguishing marks of the divine favor, he declares his resolution to show more than ordinary gratitude. This is exercise which degenerates and is degraded in the case of hypocrites to a mere sound of empty words, but he states that he would return thanks to God not with the lips only, but with sincerity of heart, for by the whole heart, as we have elsewhere seen, is meant a heart which is sincere and not... read more
Adam Clarke's Commentary on the Bible - Psalms 138:5
They shall sing in the ways of the Lord - They shall admire thy conduct, and the wondrous workings of thy providence, if they should not even unite with thy people. read more