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.

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:

Treasury of Scripture Knowledge

Summary

Seeing his days are determined, the number of his months are with thee, thou hast appointed his bounds that he cannot pass;

Bible References

Thou hast

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.
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: