I saw another teaching by Elder Oaks mentioned in the Religion 250 institute manual.
Page 111
"Of [the parable of the ten virgins], the Lord said, 'And at that day, when I shall
come in my glory, shall the parable be fulfilled which I spake concerning the ten
virgins' (D&C 45:56).
"Given in the 25th chapter of Matthew, this parable contrasts the circumstances
of the five foolish and the five wise virgins. All ten were invited to the
wedding feast, but only half of them were prepared with oil in their lamps when
the bridegroom came. The five who were prepared went into the marriage feast, and
the door was shut. The five who had delayed their preparations came late. The
door had been closed, and the Lord denied them entrance, saying, 'I know you not'
[Matthew 25:12]. 'Watch therefore,' the Savior concluded, 'for ye know neither the
day nor the hour wherein the Son of man cometh' [Matthew 25:13].
"The arithmetic of this parable is chilling. The ten virgins obviously represent
members of Christ's Church, for all were invited to the wedding feast and all
knew what was required to be admitted when the bridegroom came. But only half were
ready when he came" (Dallin H. Oaks, "Preparation for the Second Coming," Ensign
or Liahona, May 2004, 8).
This does not bode well if the Marriage Supper occurs in the highest division of
the Celestial Kingdom for only exalted members of the Church of the Firstborn
(D&C 76:54).
"But the wise answered, saying, Not so; lest there be not enough for us and you:
but go ye rather to them that sell, and buy for yourselves. And while they went
to buy, the bridegroom came; and they that were ready went in with him to the
marriage: and the door was shut. Afterward came also the other virgins, saying,
Lord, Lord, open to us. But he answered and said, Verily I say unto you, I know
you not. Watch therefore, for ye know neither the day nor the hour wherein the
Son of man cometh".