2 Peter 3:8

But forget not this one thing, beloved, 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 thy sight Are but as yesterday when it is past, And as a watch in the night.

Romans 11:25

For I would not, brethren, have you ignorant of this mystery, lest ye be wise in your own conceits, that a hardening in part hath befallen Israel, until the fulness of the Gentiles be come in;

1 Corinthians 10:1

For I would not, brethren, have you ignorant, that our fathers were all 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, have you ignorant of this mystery, lest ye be wise in your own conceits, that a hardening in part hath befallen Israel, until the fulness of the Gentiles be come in;
1 Corinthians 10:1
For I would not, brethren, have you ignorant, that our fathers were all 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 thy sight Are but as yesterday when it is past, And as a watch in the night.

General references

Job 10:5
Are thy days as the days of man, Or thy years as man's days,
Psalm 114:4
The mountains skipped like rams, The little hills like lambs.
Hebrews 10:37
For yet a very little while, He that cometh shall come, and shall not tarry.

American Standard Version Public Domain