Psalms 138:1,2 - Joseph Benson’s Commentary on the Old and New Testaments

I will praise thee with my whole heart With uprightness of intention, and fervency of affection. Before the gods will I sing praises, &c. Before kings and princes, or, before judges and great men, either those of other nations who visited him, or those of his own nation that attended on him. He will not only praise God in his heart, which he might do, by pious ejaculations, in any company, but will sing praise with his voice, if there should be occasion. I will worship toward thy holy temple Where the ark was. He saith, toward it, because he was not permitted to enter into it. For thy loving-kindness and for thy truth For thy goodness and for thy promises; 1st, For promising me singular blessings out of thy mere grace and favour; and, 2d, For performing thy promises most faithfully. For thou hast magnified thy word, &c. Thou hast glorified thy faithfulness, in fulfilling thy promises unto me, more than any other of thy glorious perfections by which thou art known. Not that one of God's attributes is really, and in itself, more great or glorious than another; or can be made so, but because one may be more celebrated and admired by men than another; as here, God's gracious promise of the kingdom made to David, and the wonderful accomplishment thereof, in spite of all those difficulties which stood in the way, and which seemed to men to be insuperable, was, at this time, more observed and admired than any other of his attributes or actions.