1 Thessalonians 5:16

Be always joyful.

Revelation 11:15-18

And the seventh angel sounded his trumpet, and there were great voices in heaven, saying, The kingdoms of the world are become the kingdoms of our Lord, and of his Anointed, and He shall reign for ever and ever.

Revelation 19:1-6

And after these things I heard a loud voice as of a great multitude in heaven, saying, Alleluia; salvation, and glory, and honor, and power to the Lord our God: for true and righteous are his judgements;

Treasury of Scripture Knowledge

Summary

But be ye glad and rejoice for ever in that which I create: for, behold, I create Jerusalem a rejoicing, and her people a joy.

Bible References

General references

1 Thessalonians 5:16
Be always joyful.
Revelation 11:15
And the seventh angel sounded his trumpet, and there were great voices in heaven, saying, The kingdoms of the world are become the kingdoms of our Lord, and of his Anointed, and He shall reign for ever and ever.
Revelation 19:1
And after these things I heard a loud voice as of a great multitude in heaven, saying, Alleluia; salvation, and glory, and honor, and power to the Lord our God: for true and righteous are his judgements;