Revelation 21:4

and he will wipe every tear out of their eyes; and there will be no more death, neither will there be any more sorrow, nor crying, nor pain: because the former things have passed away.

Revelation 7:15-17

On account of this they are before the throne of God, and they worship him day and night in his temple, and the one sitting upon the throne will spread his tabernacle over them.

Treasury of Scripture Knowledge

Summary

Thy sun shall no more go down; neither shall thy moon withdraw itself: for the LORD shall be thine everlasting light, and the days of thy mourning shall be ended.

General references

Bible References

The days

Revelation 7:15
On account of this they are before the throne of God, and they worship him day and night in his temple, and the one sitting upon the throne will spread his tabernacle over them.
Revelation 21:4
and he will wipe every tear out of their eyes; and there will be no more death, neither will there be any more sorrow, nor crying, nor pain: because the former things have passed away.

General references

1 Corinthians 13:10
but when the perfect may come, that which is in part shall be done away.