Isaiah 51:11

Therefore the redeemed of Jehovah shall return and come with singing into Zion; and everlasting joy shall be on their head. Gladness and joy shall overtake them; sorrow and mourning shall flee away.

Isaiah 35:10

And the ransomed of Jehovah shall return and come to Zion with songs and everlasting joy on their heads; they shall obtain joy and gladness, and sorrow and sighing shall flee away.

Revelation 7:17

For the Lamb who is in the midst of the throne will feed them and will lead them to the fountains of living waters. And God will wipe away all tears from their eyes.

Isaiah 25:8

He will swallow up death in victory; and the Lord Jehovah will wipe away tears from all faces. And He shall take away from all the earth the rebuke of His people. For Jehovah has spoken.

Isaiah 60:19-20

The sun will no more be your light by day; nor the brightness of the moon give light to you; but Jehovah will be to you for everlasting light, and your God your glory.

Revelation 21:4

And God will wipe away all tears from their eyes. And there will be no more death, nor mourning, nor crying out, nor will there be any more pain; for the first things passed away.

Isaiah 49:13

Sing, O heavens; and be joyful, O earth; and break out into singing, O mountains; for the Lord has comforted His people, and will have mercy on His afflicted.

Isaiah 61:7

For your shame you will have double; and for disgrace they will rejoice in their portion; therefore in their own land they will possess double; everlasting joy will be theirs.

Isaiah 65:19

I will rejoice in Jerusalem, and I will rejoice in My people; and the voice of weeping will no more be heard in her, nor the voice of crying be heard in her.

Jeremiah 31:11-12

For Jehovah has redeemed Jacob, and ransomed him from the hand of the one stronger than he.

Jeremiah 33:11

the voice of joy and the voice of gladness, the voice of the bridegroom and the voice of the bride, the voice of those who shall say, Praise Jehovah of Hosts, for Jehovah is good, for His mercy endures forever; and the voice of those who shall bring the sacrifice of praise into the house of Jehovah. For I will cause the captivity of the land to return, as at the first, says Jehovah.

Revelation 21:1

And I saw a new heaven and a new earth. For the first heaven and the first earth had passed away. And the sea no longer is.

Revelation 22:3

And every curse will no longer be; but the throne of God and of the Lamb will be in it, and His servants will serve Him.

Isaiah 44:23

Sing, O heavens; for Jehovah has done it. Shout, lower parts of the earth. Break out into singing, O mountains, O forest, and every tree in it. For Jehovah has redeemed Jacob, and glorified Himself in Israel.

Isaiah 48:20

Go out of Babylon; flee from the Chaldeans. Tell it with a voice of singing, let this be heard, let it go out to the end of the earth; say, Jehovah has redeemed His servant Jacob.

Jeremiah 30:18-19

So says Jehovah: Behold, I will bring again the captivity of Jacob's tents, and will have mercy on his dwelling places. And the city shall be built on her own hill, and the palace shall remain in its own place.

Acts 2:41-47

Then those who gladly received his word were baptized. And the same day there were added about three thousand souls.

2 Corinthians 4:17-18

For the lightness of our present affliction works out for us a far more excellent eternal weight of glory,

2 Thessalonians 2:16

Now may our Lord Jesus Christ Himself, and God, even our Father, who has loved us and has given us everlasting consolation and good hope through grace,

Jude 1:24

Now to Him being able to keep you without stumbling, and to set you before His glory without blemish, with unspeakable joy;

Revelation 5:9-13

And they sang a new song, saying, You are worthy to take the book and to open its seals, for You were slain and have redeemed us to God by Your blood out of every kindred and tongue and people and nation.

Revelation 7:9-10

After these things I looked, and lo, a great multitude, which no man could number, out of all nations and kindreds and people and tongues, stood before the throne and before the Lamb, clothed with white robes, with palms in their hands.

Revelation 14:1-4

And I looked, and lo, the Lamb stood on Mount Zion. And with Him were a hundred and forty-four thousands, having His Father's name written in their foreheads.

Revelation 19:1-7

And after these things I heard a great sound of a numerous crowd in Heaven, saying, Hallelujah! Salvation and glory and honor and the power to the Lord our God!

Treasury of Scripture Knowledge

Summary

Therefore the redeemed of the LORD shall return, and come with singing unto Zion; and everlasting joy shall be upon their head: they shall obtain gladness and joy; and sorrow and mourning shall flee away.

Bible References

The redeemed

Isaiah 35:10
And the ransomed of Jehovah shall return and come to Zion with songs and everlasting joy on their heads; they shall obtain joy and gladness, and sorrow and sighing shall flee away.
Isaiah 44:23
Sing, O heavens; for Jehovah has done it. Shout, lower parts of the earth. Break out into singing, O mountains, O forest, and every tree in it. For Jehovah has redeemed Jacob, and glorified Himself in Israel.
Isaiah 48:20
Go out of Babylon; flee from the Chaldeans. Tell it with a voice of singing, let this be heard, let it go out to the end of the earth; say, Jehovah has redeemed His servant Jacob.
Isaiah 49:13
Sing, O heavens; and be joyful, O earth; and break out into singing, O mountains; for the Lord has comforted His people, and will have mercy on His afflicted.
Jeremiah 30:18
So says Jehovah: Behold, I will bring again the captivity of Jacob's tents, and will have mercy on his dwelling places. And the city shall be built on her own hill, and the palace shall remain in its own place.
Jeremiah 31:11
For Jehovah has redeemed Jacob, and ransomed him from the hand of the one stronger than he.
Jeremiah 33:11
the voice of joy and the voice of gladness, the voice of the bridegroom and the voice of the bride, the voice of those who shall say, Praise Jehovah of Hosts, for Jehovah is good, for His mercy endures forever; and the voice of those who shall bring the sacrifice of praise into the house of Jehovah. For I will cause the captivity of the land to return, as at the first, says Jehovah.
Acts 2:41
Then those who gladly received his word were baptized. And the same day there were added about three thousand souls.
Revelation 5:9
And they sang a new song, saying, You are worthy to take the book and to open its seals, for You were slain and have redeemed us to God by Your blood out of every kindred and tongue and people and nation.
Revelation 7:9
After these things I looked, and lo, a great multitude, which no man could number, out of all nations and kindreds and people and tongues, stood before the throne and before the Lamb, clothed with white robes, with palms in their hands.
Revelation 14:1
And I looked, and lo, the Lamb stood on Mount Zion. And with Him were a hundred and forty-four thousands, having His Father's name written in their foreheads.
Revelation 19:1
And after these things I heard a great sound of a numerous crowd in Heaven, saying, Hallelujah! Salvation and glory and honor and the power to the Lord our God!

Everlasting

Isaiah 60:19
The sun will no more be your light by day; nor the brightness of the moon give light to you; but Jehovah will be to you for everlasting light, and your God your glory.
Isaiah 61:7
For your shame you will have double; and for disgrace they will rejoice in their portion; therefore in their own land they will possess double; everlasting joy will be theirs.
2 Corinthians 4:17
For the lightness of our present affliction works out for us a far more excellent eternal weight of glory,
2 Thessalonians 2:16
Now may our Lord Jesus Christ Himself, and God, even our Father, who has loved us and has given us everlasting consolation and good hope through grace,
Jude 1:24
Now to Him being able to keep you without stumbling, and to set you before His glory without blemish, with unspeakable joy;

And sorrow

Isaiah 25:8
He will swallow up death in victory; and the Lord Jehovah will wipe away tears from all faces. And He shall take away from all the earth the rebuke of His people. For Jehovah has spoken.
Isaiah 60:20
Your sun will no more go down, nor your moon withdraw; for Jehovah will be your everlasting light, and the days of your mourning will be ended.
Isaiah 65:19
I will rejoice in Jerusalem, and I will rejoice in My people; and the voice of weeping will no more be heard in her, nor the voice of crying be heard in her.
Revelation 7:17
For the Lamb who is in the midst of the throne will feed them and will lead them to the fountains of living waters. And God will wipe away all tears from their eyes.
Revelation 21:1
And I saw a new heaven and a new earth. For the first heaven and the first earth had passed away. And the sea no longer is.
Revelation 22:3
And every curse will no longer be; but the throne of God and of the Lamb will be in it, and His servants will serve Him.

General references

Psalm 102:21
to declare the name of Jehovah in Zion, and His praise in Jerusalem;
Psalm 126:3
Great things did Jehovah to work with us and we are glad.
Isaiah 24:14
They shall lift up their voice, they shall sing for the majesty of Jehovah, they shall cry aloud from the sea.
Isaiah 65:18
But be glad and rejoice forever in that which I create; for behold, I create Jerusalem a rejoicing, and her people a joy.
Matthew 5:4
Blessed are they that mourn! For they shall be comforted.