Matthew Poole and continuators on Numbers 33:4

4 (For the Egyptians buried all their first-born, which the LORD had smitten among them: upon their gods also the LORD executed judgment.)

Either 1. their princes and rulers, who are sometimes called gods in Scripture; and so this is added by way of amplification, God flew their first-born, not onely of the meaner sort, but even of their King and princes. Or 2. their falsegods, to wit, those beasts, which the brutish Egyptians worshipped as Gods, which were killed with the rest, for the first-born both of men and beasts were then killed, Exod. 13. 15. See more on Exod. 12. 12. and 18. 11.

Marginal references: Exod. 12. [illegible: 1 word] ▪; Exod. 12. [illegible: 1 word] ▪ & 18. 11. Isa. 21. 9. & 19. 1.