55 Or “The heavens were.” The Greek word οὐρανός (ouranos) can mean either “heaven” or “sky.”
56 ἀποχωρίζω states, “ὁ οὐρανὸς ἀπεχωρίσθη the sky was split Rv 6:14.” Although L&N 79.120 gives the meaning “the sky disappeared like a rolled-up scroll” here, a scroll that is rolled up does not “disappear,” and such a translation could be difficult for modern readers to understand.
57 On this term ἑλίσσω states, “ὡς βιβλίον ἑλισσόμενον like a scroll that is rolled up … Rv 6:14.”

In other versions

The sky vanished like a scroll that is being rolled up, and every mountain and island was removed from its place.

The heavens receded like a scroll being rolled up, and every mountain and island was removed from its place.

the sky was split apart like a scroll being rolled up; and every mountain and island was moved from its place.

The sky was rolled up like a scroll, and all of the mountains and islands were moved from their places.

And the sky was split apart like a scroll that is rolled up, and every mountain and island were moved from their place.

And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places.

Public Domain