Matthew Poole and continuators on Psalms 109:21

21. But do thou for me , O GOD the LORD, for thy names sake : because thy mercy is good , deliver thou me.

To wit, what I desire, which he expresseth in the next clause. Or, do thou act for me: be not silent or still, but stir up thy self to work on my behalf.

For the glory of thy faithfulness, which is highly concerned in giving me the deliverance which thou hast promised to me.

i. e. Gracious, and ready to do good to all, but especially to those that love and fear thee. As sin is said to be sinful, Rom. 7. 13. so Gods mercy may be said to be merciful, to wit, in an eminent degree, and above the mercy of all the creatures.