Revelation 2:25 in the King James Version
But that which ye have already hold fast till I come.
Context
24 But to you I say, to the rest who are in Thyatira—as many as don’t have this teaching, who don’t know what some call ‘the deep things of Satan’—to you I say, I am not putting any other burden on you.
25 Nevertheless, hold that which you have firmly until I come.
26 He who overcomes, and he who keeps my works to the end, to him I will give authority over the nations.