"From everlasting to everlasting, thou art God," said Moses in the Spirit. "From the vanishing point to the vanishing point" would be another way to say it quite in keeping with the words as Moses used them. The mind looks backward in time till the dim past vanishes, then turns and looks into the future till thought and imagination collapses from exhaustion: and God is at both points, unaffected by either.
Time marks the beginning of created existence, and because God never began to exist it can have no application to Him. "Began" is a time-word, and it can have no personal meaning for the high and lofty One that inhabited eternity....
God dwells in eternity but time dwells in God. He has already lived all our tomorrows as He has lived all our yesterdays. An illustration offered by C. S. Lewis may help us here. He suggests that we think of a sheet of paper infinitely extended. That would be eternity. Then on that paper draw a short line to represent time. As the line begins and ends on that infinite expanse, so time began in God and will end in Him.
That God appears at time’s beginning is not too difficult to comprehend, but that He appears at the beginning and end of time simultaneously is not so easy to grasp; yet it is true.