'Virgins' in the Bible

"Then the kingdom of heaven may be compared to ten virgins who took their lamps [and] went out to meet the bridegroom.

Then all those virgins woke up and trimmed their lamps.

And later the other virgins came also, saying, 'Lord, lord, open [the door] for us!'

Now concerning virgins I do not have a command from the Lord, but I am giving an opinion as one shown mercy by the Lord to be trustworthy.

These are those who have not been defiled with women, for they are virgins. These [are] the ones who follow the Lamb wherever he goes. These were bought from humanity [as] first fruits to God and to the Lamb,