Apocalypse Explained #599
599. Verse 2. And he had in his hand a little book opened, signifies the Word laid open. This is evident from the signification of "a little book opened," as being the Word laid open. It can be seen that this is what is meant by "the little book opened," since "the strong angel coming down out of heaven, who had in his hand a little book," represented the Lord as to the Word, and in fact, as to its ultimate sense, which is called the sense of the letter (See above, n. 593); and because the Word was laid open both to angels and men it is said "a little book opened."
Matthew 26:51-52
51
Behold, one of those who were with Jesus stretched out his hand, and drew his sword, and struck the servant of the high priest, and struck off his ear.
52
Then Jesus said to him, "Put your sword back into its place, for all those who take the sword will die by the sword.