Rev 3:8

8 “I know your works (behold, I have set before you an open door, which no one can shut), that you have a little power, and kept my word, and didn’t deny my name. 

have kept My word – from John 14:23 – “If anyone loves Me, he will keep My word…and We will make our abode with him.” Hence, Jesus here says, “I have put before you an open door which no one can shut.”