The End That Completes, Not Merely Stops
τέλος carries the idea of a goal reached, not just a boundary crossed.
The third couplet in this verse reads "the Beginning and the End" — ἀρχή and τέλος. The word τέλος has a long history in Greek of pointing toward fulfillment: the point at which something arrives at what it was always moving toward. A race has a finish line, but τέλος suggests more than the line — it suggests the completion of the whole movement. That purposive weight is built into the word itself.
What makes this noticeable in the verse is that ἔσχατος — translated 'Last' in the second couplet — is already present. The two words are not interchangeable. ἔσχατος places something at the end of a sequence, the final item in a row. τέλος points toward the fulfillment into which a process resolves. The speaker uses both, and they do different work.
The first two couplets (Alpha/Omega, First/Last) are straightforward polar pairs — opposites anchoring the full range. The third shifts register: ἀρχή ('beginning') and τέλος ('purposive completion') frame not just a span but a direction. The verse ends on a word that looks toward arrival rather than mere terminus.