Revelation 3:7

7 "And to the angel of the church in Philadelphia write: These are the words of the holy one, the true one, who has the key of David, who opens and no one will shut, who shuts and no one opens:

Revelation 3:7 In-Context

5 If you conquer, you will be clothed like them in white robes, and I will not blot your name out of the book of life; I will confess your name before my Father and before his angels.
6 Let anyone who has an ear listen to what the Spirit is saying to the churches.
7 "And to the angel of the church in Philadelphia write: These are the words of the holy one, the true one, who has the key of David, who opens and no one will shut, who shuts and no one opens:
8 "I know your works. Look, I have set before you an open door, which no one is able to shut. I know that you have but little power, and yet you have kept my word and have not denied my name.
9 I will make those of the synagogue of Satan who say that they are Jews and are not, but are lying—I will make them come and bow down before your feet, and they will learn that I have loved you.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.