If God is Omniscient and Omnipotent, then God MUST be Infinite. If not, there would be a place to get out of God’s sight and away from God’s power. Then God would not be Omniscient and Omnipotent.
If God is Infinite, it is not possible to be separate from God, as that which is Infinite has no boundaries and therefore is Omnipresent.
So a “state of separation from God” cannot actually exist. We can create the illusion of it and we can believe it and we can behave as if it were so, but it cannot exist in Truth.
And if it cannot truly exist, then it cannot be eternal.
We choose to be in Heaven or in Hell every moment.
Isaiah 55:7-9 King James Version (KJV)
7 Let the wicked forsake his way, and the unrighteous man his thoughts: and let him return unto the Lord, and he will have mercy upon him; and to our God, for he will abundantly pardon.
8 For my thoughts are not your thoughts, neither are your ways my ways, saith the Lord.
9 For as the heavens are higher than the earth, so are my ways higher than your ways, and my thoughts than your thoughts.
Additional Scriptures that may help.
Mark 10:27, Matthew 19:26, 1 Corinthians 1:25