Revelation 22:7

Lo, I come quickly; happy is he who is keeping the words of the prophecy of this scroll.'

Revelation 1:3

Happy is he who is reading, and those hearing, the words of the prophecy, and keeping the things written in it -- for the time is nigh!

Revelation 3:11

Lo, I come quickly, be holding fast that which thou hast, that no one may receive thy crown.

Revelation 22:12

And lo, I come quickly, and my reward is with me, to render to each as his work shall be;

Revelation 22:20

he saith -- who is testifying these things -- 'Yes, I come quickly!' Amen! Yes, be coming, Lord Jesus!

Revelation 22:9-10

and he saith to me, 'See -- not; for fellow-servant of thee am I, and of thy brethren the prophets, and of those keeping the words of this scroll; before God bow.'

Revelation 16:15

lo, I do come as a thief; happy is he who is watching, and keeping his garments, that he may not walk naked, and they may see his unseemliness,' --

Treasury of Scripture Knowledge

Summary

Behold, I come quickly: blessed is he that keepeth the sayings of the prophecy of this book.

Bible References

I come

Revelation 22:10
And he saith to me, 'Thou mayest not seal the words of the prophecy of this scroll, because the time is nigh;
Revelation 3:11
Lo, I come quickly, be holding fast that which thou hast, that no one may receive thy crown.