The Apostle Paul
Ephesians 2:4BSB·traditional attribution

But because of His great love for us, God, who is rich in mercy,

John Calvin Reformed @genevareformer

4. But God, who is rich in mercy. “That is, exceedingly bountiful and liberal in the exercise of mercy. And in this metaphorical sense, the words ‘rich’ and ‘riches’ are used by the best writers. Lucian speaks of πλοῦτος φιλοσοφίας, ‘the riches of philosophy.’ The Roman orator frequently speaks of the ‘riches of the mind,’ by which he means those excellencies of understanding and virtue...

Matthew Henry Presbyterian @wholebiblehenry

Here the apostle begins his account of the glorious change that was wrought in them by converting grace, where observe, I. By whom, and in what manner, it was brought about and effected. 1. Negatively: Not of yourselves, Eph 2:8.

Commenting on Ephesians 2:4-10

John Gill Reformed Baptist @doctorgill

But God, who is rich in mercy,.... Mercy is a perfection of the divine nature, and is essential to God; and may be considered with respect to the objects of it, either as general, extending to all men in a providential way; or as special, reaching only to some in a way of grace; for though mercy is his nature, yet the display and exertion...