2 Peter 3:8

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.

Psalm 90:4

For a thousand years in your sight are but as yesterday when it is past, and as a watch in the night.

Romans 11:25

For I would not, brethren, that you should be ignorant of this mystery, lest you should be wise in your own conceits; that blindness in part is happened to Israel, until the fullness of the Gentiles comes in.

1 Corinthians 10:1

Moreover, brethren, I want not that you should be ignorant, how that all our fathers were under the cloud, and all passed through the sea;

1 Corinthians 12:1

Now concerning spiritual gifts, brethren, I would not have you ignorant.

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.

That one

General references

Bible References

Be not

Romans 11:25
For I would not, brethren, that you should be ignorant of this mystery, lest you should be wise in your own conceits; that blindness in part is happened to Israel, until the fullness of the Gentiles comes in.
1 Corinthians 10:1
Moreover, brethren, I want not that you should be ignorant, how that all our fathers were under the cloud, and all passed through the sea;
1 Corinthians 12:1
Now concerning spiritual gifts, brethren, I would not have you ignorant.

That one

Psalm 90:4
For a thousand years in your sight are but as yesterday when it is past, and as a watch in the night.

General references

Job 10:5
Are your days as the days of man? are your years as man's days,
Psalm 114:4
The mountains skipped like rams, and the little hills like lambs.
Hebrews 10:37
For yet a little while, and he that shall come will come, and will not tarry.