Revelation 3:7-8
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 3:20
Behold, I stand at the door and knock: if any one hear my voice, and open the door, I will enter into his house, and will sup with him, and he with me.
Revelation 7:17
for the Lamb, who is in the midst of the throne, shall feed them, and he shall lead them to fountains of living water; and God shall wipe away every tear from their eyes.
Revelation 20:15
And if any one was not found written in the book of life, he was cast into the lake of fire.