For more concerning Rev. 3:14, see:
Some take the view that what is meant is that the Son was ‘the beginner of God’s creation,’ that he was its ‘ultimate source.’ But Liddell and Scott’s Greek-English Lexicon lists “beginning” as... (rs p. 405-p. 426; Watchtower Online Library)
Appreciate Jesus’ Unique Role in God’s Purpose; "The Amen" Why is Jesus called “the Amen”? (w08 12/15 pp. 12-16; Watchtower Online Library)
Rev. 3:14 - Does 'Arkhe' Mean "Beginning" or Does it Mean "Origin" or "Source"? (Defend Jehovah's Witnesses)
NWT - Rev. 3:14 (Defending the New World Translation)
BWF - 'Beginning,' 'Wisdom,' and 'Firstborn' (Examining the Trinity)
Revelation 3:14 "...the beginning of the creation by God." (IN Defense of the NWT)