KJV:
Now as Jannes and Jambres withstood Moses, so do these also resist the truth: men of corrupt minds, reprobate concerning the faith.
NASB:
Just as Jannes and Jambres opposed Moses, so these men also oppose the truth, men of depraved mind, rejected in regard to the faith.
KJV:
Of whom be thou ware also; for he hath greatly withstood our words.
NASB:
Be on guard against him yourself, for he vigorously opposed our teaching.
KJV:
Submit yourselves therefore to God. Resist the devil, and he will flee from you.
NASB:
Submit therefore to God. Resist the devil and he will flee from you.
KJV:
Whom resist stedfast in the faith, knowing that the same afflictions are accomplished in your brethren that are in the world.
NASB:
But resist him, firm in your faith, knowing that the same experiences of suffering are being accomplished by your brethren who are in the world.