Psalms 115:1

Sufficient care is here taken to answer both the pretensions of self and the reproaches of idolaters. I. Boasting is here for ever excluded, Psa 115:1. Let no opinion of our own merits have any room either in our prayers or in our praises, but let both centre in God's glory. 1. Have we received any mercy, gone through any service, or gained any success? We must not assume the glory of it to ourselves, but ascribe it wholly to God. We must not imagine that we do any thing for God by our own strength, or deserve any thing from God by our own righteousness; but all the good we do is done by the power of his grace, and all the good we have is the gift of his mere mercy, and therefore he must have all the praise. Say not, The power of my hand has gotten me this wealth, Deu 8:17. Say not, For my righteousness the Lord has done these great and kind things for me, Deu 9:4. No; all our songs must be sung to this humble tune, Not unto us, O Lord! and again, Not unto us, but to thy name, let all the glory be given; for whatever good is wrought in us, or wrought for us, it is for his mercy and his truth's sake, because he will glorify his mercy and fulfil his promise.

— Matthew Henry's Concise Commentary (public domain)