Strong's Concordance G3801

Original Word: ὁ ὢν καί ὁ ἦν καί ὁ ἐρχόμενος
Transliteration: ho ṑn kaí ho ēn kaí ho erchómenos
Phonetic Spelling: ho own kahee ho ane kahee ho er-khom'-en-os
[ὁ ὢν καί ὁ ἦν καί ὁ ἐρχόμενος] a phrase combining G3588 with the present participle and imperfect of G1510 and the present participle of G2064 by means of G2532; the one being and the one that was and the one coming, i.e. the Eternal, as a divine epithet of Christ

Usages throughout the bible

Revelation 1:4 - John to the seven churches which are in Asia: Grace be unto you, and peace, from him which is, and which was, and which is to come; G3801 and from the seven Spirits which are before his throne;

Revelation 1:8 - I am Alpha and Omega, the beginning and the ending, saith the Lord, which is, and which was, and which is to come, G3801 the Almighty.

Revelation 4:8 - And the four beasts had each of them six wings about him; and they were full of eyes within: and they rest not day and night, saying, Holy, holy, holy, Lord God Almighty, which was, and is, and is to come. G3801

Revelation 11:17 - Saying, We give thee thanks, O Lord God Almighty, which art, and wast, and art to come; G3801 because thou hast taken to thee thy great power, and hast reigned.

Revelation 16:5 - And I heard the angel of the waters say, Thou art righteous, O Lord, which art, and wast, and shalt be, G3801 because thou hast judged thus.