This is fun!
It is written Jesus says, "get away from me".
Why does he say that?
Depart is a verb and away is a place. What will he tell them?
Matthew 7:
22"Many will say to Me on that day, 'Lord, Lord, did we not prophesy in Your name, and in Your name cast out demons, and in Your name perform many miracles?'
23"And then I will declare to them, 'I never knew you; DEPART FROM ME, YOU WHO PRACTICE LAWLESSNESS.'
Matthew 7:22-23
Satan does not have dominion over Gehenna -or the "lake of fire".
It is not as if he has some evil kingdom elsewhere where bad people can get together and be bad. Satan will be bound for a thousand years -and then he will also be cast into Gehenna -just like the beast, false prophet were a thousand years earlier.
There are several words associated with or translated "hell" in the bible. Sheol and hades are basically the grave. Tartaros is the state of restraint of the sinning angels. Gehenna is the final ultimatum. It is essentially separation and unpleasantness -the exact nature of it we do not yet know.
Before any can receive eternal life, they must be of a mind to be governed by God. The ones Christ will tell to depart are those who did evil rather than actually keeping the commandments -but to some degree thought they were doing God's will.
The "day" spoken of in Matthew 7:22-23 is the judgment.
The following is also about that day....
1Co 3:13 Every man's work shall be made manifest: for the day shall declare it, because it shall be revealed by fire; and the fire shall try every man's work of what sort it is.
1Co 3:14 If any man's work abide which he hath built thereupon, he shall receive a reward.
1Co 3:15 If any man's work shall be burned, he shall suffer loss:
but he himself shall be saved; yet so as by fire
At the judgment, all who have ever lived will be judged according to their works
. Some will have done good works and will fare well more immediately.
Some will not have done good works, and will undergo that which will purify them.
They will be separated from those who have done good works and those who were in the first resurrection until such time as they are prepared and able to do good works.
Any who utterly refuse CAN be destroyed -but we do not know if God is able to turn all to repentance.
Mat 7:21 Not every one that saith unto me, Lord, Lord,
shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Luk 16:25 But Abraham said, Son, remember that thou in thy lifetime receivedst thy good things, and likewise Lazarus evil things: but now he is comforted, and thou art tormented.
Luk 16:26
And beside all this, between us and you there is a great gulf fixed: so that they which would pass from hence to you cannot; neither can they pass to us, that would come from thence.
Luk 16:27 Then he said, I pray thee therefore, father, that thou wouldest send him to my father's house:
Luk 16:28 For I have five brethren; that he may testify unto them, lest they also come into this place of torment.
Luk 16:29 Abraham saith unto him, They have Moses and the prophets; let them hear them.
Luk 16:30 And he said, Nay, father Abraham: but if one went unto them from the dead, they will repent.
Luk 16:31
And he said unto him, If they hear not Moses and the prophets, neither will they be persuaded, though one rose from the dead.