We have an interpretive question here. No one is contesting that Rev. 3:14 refers to Christ as the beginning of God's creation. But this use of "beginning" could simply mean Christ
originated all creation, as its source, as its cause (a la John 1:3). Strongs tells us that this is a proper translation of
arche.
There are two ways to interpret the verse. Plummer's Pulpit Commentary lays out the options:
"The Beginning of the creation of God. There are two ways in which these words might be understood:
(1) that in which "beginning" is taken in a passive sense, and which would therefore make Christ the first created thing of all the things which God created;
(2) the active sense, by which Christ is described as the Beginner, the Author, Moving Principle or Source of all the things which God created. That the latter meaning is the true one is plain from the whole tenor of Holy Scripture. The Arians, attempting to disprove the Divinity of our Lord, quoted this passage, attributing to it the former sense. But ἀρχή is often used actively, and may well be so used here . . ."
I should note that
Matthew Henry's Commentary on the verse favors this interpretation ("he is the beginning, that is, the first cause, the Creator").