2 Peter 3:8

But let not this one thing be forgotten, beloved, that one day with the Lord is as a thousand years, and a thousand years as one day.

Romans 11:25

I do not wish you to be ignorant, brethren, as to this mystery, in order that you may not he wise with yourselves, that blindness in part has happened unto Israel, until the fulness of the Gentiles may come in;

1 Corinthians 10:1

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

Treasury of Scripture Knowledge

Summary

But, beloved, be not ignorant of this one thing, that one day is with the Lord as a thousand years, and a thousand years as one day.

General references

Bible References

Be not

Romans 11:25
I do not wish you to be ignorant, brethren, as to this mystery, in order that you may not he wise with yourselves, that blindness in part has happened unto Israel, until the fulness of the Gentiles may come in;
1 Corinthians 10:1
For I do not wish you to be ignorant, brethren, that our fathers were all under the cloud, and all passed through the sea;

General references

Hebrews 10:37
For yet a little while, the one coming will come, and will not tarry.