So Jesus describes what happens:

“While [the foolish virgins] were going off to buy [oil], the bridegroom arrived, and the virgins that were ready went in with him to the marriage feast; and the door was shut. Afterwards the rest of the virgins also came, saying, ‘Sir, sir, open to us!’ In answer he said, ‘I tell you the truth, I do not know you.’”

So when the time comes, Christ does not open the door to the marriage feast in heaven to them. He leaves them outside in the blackness of the world’s deepest night, to perish with all other workers of lawlessness.