1 Thessalonians 5:16

Be always joyful.

Revelation 11:15-18

And the seventh angel sounded, and there followed loud voices in heaven, saying, The kingdom of the world is become the kingdom of our Lord and of his Christ, and he will reign for ever and ever.

Revelation 19:1-6

After these things I heard as it were a loud voice of a great multitude in heaven, saying, Hallelujah I The salvation, and the glory, and the power, belong to our God;

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, and there followed loud voices in heaven, saying, The kingdom of the world is become the kingdom of our Lord and of his Christ, and he will reign for ever and ever.
Revelation 19:1
After these things I heard as it were a loud voice of a great multitude in heaven, saying, Hallelujah I The salvation, and the glory, and the power, belong to our God;