Matthew Poole and continuators on Exodus 22:25

25 If thou lend money to any of my people that is poor by thee, thou shalt not be to him as an usurer, neither shalt thou lay upon him usury .

(i. e.) Any Israelite: for it was permitted to take usury of the Gentiles, Deut. 23. 20.

This seems to be added not by way of apposition, as if Gods people and the poor were all one, because such are commonly poor, but by way of restriction; for God had promised greatly to bless and enrich the generality of his people, if they by their wickedness did not hinder it, and that there should be few poor among them, yet some such there should be for the tryal and exercise of their charity. See Lev. 19. 10. Deut. 15. 4, 7, 11.

The Hebrew word signifies biting: so usury is called not by way of distinction as if moderate usury were allowed in this case, which is manifestly false, because the borrower is here supposed to be poor, to whom not the use onely, but oft-times even the principal, is to be remitted, Luk. 6. 34, 35. but by way of explication, because all usury is of a biting or eating nature, which commonly consumes the person that pays it.

Marginal references: Lev. 25. 37. Deut. 23. 19. Psal. 15. 5. Neh. 5. 7. Ezek. 18. 8, 17.