John 16:20-22

In most solemn truth I tell you that you will weep aloud and lament, but the world will be glad. You will mourn, but your grief will be turned into gladness.

Romans 15:9-12

and that the Gentiles also have glorified God in acknowledgment of His mercy. So it is written, "For this reason I will praise Thee among the Gentiles, and sing psalms in honour of Thy name."

Revelation 11:3-15

And I will authorize My two witnesses to prophesy for 1,260 days, clothed in sackcloth.

Treasury of Scripture Knowledge

Summary

Rejoice ye with Jerusalem, and be glad with her, all ye that love her: rejoice for joy with her, all ye that mourn for her:

Rejoice ye

General references

Bible References

Rejoice ye

Romans 15:9
and that the Gentiles also have glorified God in acknowledgment of His mercy. So it is written, "For this reason I will praise Thee among the Gentiles, and sing psalms in honour of Thy name."

That mourn

John 16:20
In most solemn truth I tell you that you will weep aloud and lament, but the world will be glad. You will mourn, but your grief will be turned into gladness.
Revelation 11:3
And I will authorize My two witnesses to prophesy for 1,260 days, clothed in sackcloth.

General references

Matthew 5:4
"Blessed are the mourners, for they shall be comforted.
Romans 9:2
when I declare that I have deep grief and unceasing anguish of heart.