▼ The shorter reading “Omega” (ὦ, ō) has superior ms evidence ({א¹ A C 1611}) to the longer reading which includes “the beginning and the end” (ἀρχὴ καὶ τέλος or ἡ ἀρχὴ καὶ τὸ τέλος, archē kai telos or hē archē kai to telos), found in א*^,2 1854 2050 2329 2351 Maj.^A lat bo. There is little reason why a scribe would have deleted the words, but their clarifying value and the fact that they harmonize with 21:6 indicate that they are a secondary addition to the text.

▼ On this word BDAG 755 s.v. παντοκράτωρ states, “the Almighty, All-Powerful, Omnipotent (One) only of God…(ὁ) κύριος ὁ θεὸς ὁ π. …Rv 1:8; 4:8; 11:17; 15:3; 16:7; 21:22.”