NET
5 Now I desire to remind you (even though you have been fully informed of these facts once for all) that Jesus, having saved the people out of the land of Egypt, later destroyed those who did not believe.
Darby
5 But I would put you in remembrance, you who once knew all things, that the Lord, having saved a people out of [the] land of Egypt, in the second place destroyed those who had not believed.
KJV
5 I will therefore put you in remembrance, though ye once knew this, how that the Lord, having saved the people out of the land of Egypt, afterward destroyed them that believed not.