Revelation 3:7

And by the messenger of the congregation in Philadelphia, write: These things says the Holy One, the True One; who has the key, the Son of David; he who opens and no man shuts; and shuts, and no man opens:

Revelation 1:18

I am he who lives and was dead; and behold, I am living for ever and ever; and I have the keys of the unseen world, and of death.

Treasury of Scripture Knowledge

Summary

And the key of the house of David will I lay upon his shoulder; so he shall open, and none shall shut; and he shall shut, and none shall open.

And the key

Bible References

And the key

Revelation 1:18
I am he who lives and was dead; and behold, I am living for ever and ever; and I have the keys of the unseen world, and of death.

So he

Revelation 3:7
And by the messenger of the congregation in Philadelphia, write: These things says the Holy One, the True One; who has the key, the Son of David; he who opens and no man shuts; and shuts, and no man opens: