ὁ ὢν καί ὁ ἦν καί ὁ ἐρχόμενος

a phrase combining G3588 (ὁ) with the present participle and imperfect of G1510 (εἰμί) and the present participle of G2064 (ἔρχομαι) by means of G2532 (καί);