FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

ho ὁ ὢν καὶ ὁ ἦν καὶ ὁ ἐρχόμενος — on kai ho en kai ho erchomenos {ho own kahee ho ane kahee ho er-khom'-en-os — ho own kahee ho ane kahee ho er-khom'-en-os a phrase combining 3588 with the present participle and imperfect of 1510 and the present participle of 2064 by means of 2532; the one being and the one that was and the one coming, i.e. the Eternal, as a divine epithet of Christ:--which art (is, was), and (which) wast (is, was), and art (is) to come (shalt be).

see GREEK for 1510

see GREEK for 2532

see GREEK for 3588

see GREEK for 2064