SEV Biblia, Chapter 7:12
pues echó cada uno su vara, las cuales se volvieron dragones; mas la vara de Aarón tragó las varas de ellos.
Clarke's Bible Commentary - Exodus 7:12
Verse 12. Aaron's rod swallowed up their rods.] As Egypt was remarkably addicted to magic, sorcery, &c., it was necessary that God should permit Pharaoh's wise men to act to the utmost of their skill in order to imitate the work of God, that his superiority might be clearly seen, and his powerful working incontestably ascertained; and this was fully done when Aaron's rod swallowed up their rods. We have already seen that the names of two of the chief of these magicians were Jannes and Jambres; see on "chap. ii. 10", and 2 Tim. iii. 8. Many traditions and fables concerning these may be seen in the eastern writers.
Matthew Henry Commentary
Verses 8-13 - What men dislike, because it opposes their pride and lusts, they wil not be convinced of; but it is easy to cause them to believe thing they wish to be true. God always sends with his word full proofs of it Divine authority; but when men are bent to disobey, and willing to object, he often permits a snare to be laid wherein they are entangled The magicians were cheats, trying to copy the real miracles of Moses by secret sleights or jugglings, which to a small extent they succeeded in doing, so as to deceive the bystanders, but they were at length oblige to confess they could not any longer imitate the effects of Divin power. None assist more in the destruction of sinners, than such a resist the truth by amusing men with a counterfeit resemblance of it Satan is most to be dreaded when transformed into an angel of light.
Original Hebrew
וישׁליכו 7993 אישׁ 376 מטהו 4294 ויהיו 1961 לתנינם 8577 ויבלע 1104 מטה 4294 אהרן 175 את 853 מטתם׃ 4294
