Matthew 24:36–44: What Jesus' Return Will Be Like
Jesus answers what his return will be like by first naming what cannot be known: the day and hour belong to the Father alone. His coming will find people going about ordinary life, as in Noah's day, and it will separate one from another. The demand is readiness, not a date.
Ten Virgins: Oil You Cannot Borrow
The parable of the ten virgins turns on what happened before midnight. All ten wait and all ten sleep, so the difference is not alertness but oil already secured, and that cannot be borrowed when the cry comes.