ho erchomenos (ho own kahee) ho ane kahee (ho er-khom'-en-os) a phrase combining ho with the present participle and imperfect of eimi and the present participle of erchomai by means of kai; 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).