Infinitude of God

Before the mountains were brought forth, or ever Thou had formed the earth and the world, even from everlasting to everlasting, Thou art God. Psalms 90:2

I beheld till the thrones were cast down, and the Ancient of Days did sit...Daniel 7:9

The eternal God is thy refuge, and underneath are the everlasting arms:...Deuteronomy 33:27

And Abraham planted a grove in Beer-Sheba, and called there on the name of the LORD, the everlasting God. Genesis 21:33

But the LORD is the true God, He is the living God, and an everlasting King:...Jeremiah 10:10

But thou, Bethlehem Ephratah, though thou be little among the thousands of Judah, yet out of thee shall He come forth unto me that is to be ruler in Israel; Whose goings forth have been from of old, from everlasting. Micah 5:2

And I blessed the most High, and I praised and honoured Him that liveth for ever, Whose dominion is an everlasting dominion, and His kingdom is from generation to generation. Daniel 4:34

For the invisible things of Him from the creation of the world are clearly seen, being understood by the things that are made, even His eternal power and Godhead; so that they are without excuse. Romans 1:20

Now unto the King eternal, immortal, invisible, the only wise God, be honour and glory for ever and ever. 1 Timothy 1:17

Who only has immortality, dwelling in the light which no man can approach unto; whom no man has seen, nor can see: to whom be honour and power everlasting. Amen. 1 Timothy 6:16

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

The Hebrew word for Eternal is Olam.

OT:5769 `owlam

(o-lawm'); or `olam (o-lawm'); from OT:5956; properly, concealed, i.e. the vanishing point; generally, time out of mind (past or future), i.e. (practically) eternity; frequentatively, adverbial (especially with prepositional prefix) always:

KJV - alway (-s), ancient (time), any more, continuance, eternal, (for, [n-]) ever (-lasting, -more, of old), lasting, long (time), (of) old (time), perpetual, at any time, (beginning of the) world (+without end). Compare OT:5331, OT:5703.
(Biblesoft's New Exhaustive Strong's Numbers and Concordance with Expanded Greek-Hebrew Dictionary. Copyright (c) 1994, Biblesoft and International Bible Translators, Inc.)

The Greek word of Eternal is Aionios.

NT:166 aionios

(ahee-o'-nee-os); from NT:165; perpetual (also used of past time, or past and future as well):

KJV - eternal, for ever, everlasting, world (began).
(Biblesoft's New Exhaustive Strong's Numbers and Concordance with Expanded Greek-Hebrew Dictionary. Copyright (c) 1994, Biblesoft and International Bible Translators, Inc.)