Jude 1:5

Now I desire to remind you, though you were once for all fully informed, that the Lord who saved a people out of the land of Egypt, afterward destroyed those who did not believe.

2 Peter 3:1

This is now the second letter that I have written to you, beloved, and in both of them I have aroused your sincere mind by way of reminder;

Romans 15:15

But I have written very boldly to you on some points, so as to remind you again, because of the grace that was given me from God,

1 Corinthians 10:1-12

For I do not want you to be unaware, brethren, that our fathers were all under the cloud and all passed through the sea;

Hebrews 3:16-2

Who were they who heard and rebelled? Were they not all those Moses led out of Egypt?

2 Peter 1:12-13

Therefore I will always remind you of these things, even though you know them and are firmly established in the truth you now have.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Having

1 Corinthians 10:1
For I do not want you to be unaware, brethren, that our fathers were all under the cloud and all passed through the sea;

Afterward

Hebrews 3:16
Who were they who heard and rebelled? Were they not all those Moses led out of Egypt?
Hebrews 4:1
Therefore, while the promise of entering his rest remains, let us fear lest any one of you be judged to have come short of it.

General references

Matthew 25:2
Five of them were foolish, and five were wise.
1 Corinthians 10:5
Nevertheless, with most of them God was not pleased; for they were overthrown in the wilderness.
1 Timothy 5:15
For some have already turned aside to follow Satan.
Hebrews 3:19
So we see that they were not able to enter because of unbelief.