Then saith he unto me, See thou do it not: for I am thy fellow servant, and of thy brethren the prophets, and of them which keep the sayings of this book: worship God; and he saith, etc. (cf. the words of Revelation 19:10).
Here we have "the prophets;" in the former passage we have the "spirit of prophecy," in much the same sense; here, again, we have "them which keep the sayings of this book," in place of "that have the testimony of Jesus," in Revelation 19:10.
In the latter case, also, there is little difference of meaning, since the "sayings of this book" are exhortations to a faithful bearing of "the testimony of Jesus;" those, therefore, "who keep" (that is, carry out) "the sayings" are those who "hold the testimony of Jesus."
"The prophets" need not be restricted in meaning to either Old or New Testament prophets, but may include both. The direct inspiration of the message which St. John has to deliver is here asserted. In unison with the teaching of the Mosaic covenant, the angel commands to worship God alone (cf.
Exodus 34:14, etc.).