Charles Spurgeon Commentary Jude 1:5

"Now I desire to put you in remembrance, though ye know all things once for all, that the Lord, having saved a people out of the land of Egypt, afterward destroyed them that believed not." — Jude 1:5 (ASV)

I will therefore put you in remembrance, though you once knew this, how that the Lord, having saved the people out of the land of Egypt, afterward destroyed them that believed not.

So you may get in among the spiritual children of Israel, you may share their privileges, you may sing the Red Sea song of triumph; and yet, after all, if there is not real living faith within your soul, God will as surely destroy you as He destroyed the unbelieving Israelites.

Those myriads of graves in the wilderness are as sure a sign of God's hatred of sin as the drowning of Pharaoh's chariots and horsemen in the Red Sea.

Beware, then, of having a form of faith that does not purify your lives, a profession of belief in Christ that even allows you to live in sin with impunity; for if you have this, however near you may seem to be to the people of God, even if you are counted in with them, yet God will not count you as His, for He is the same Lord who afterward destroyed them that believed not.

I will therefore put you in remembrance, though you once knew this, how that the Lord, having saved the people out of the land of Egypt, afterward destroyed them that believed not.

If we have no real faith, we may appear to go a long way towards heaven, but we shall not enter the heavenly Canaan.