What the Bible says about Spiritually Lukewarm
(From Forerunner Commentary)
In verse 12, the King condemns this "guest" for not being properly attired. The Greek for "without" here, me, signifies rebellion, refusal. It is as if the guest says, "I will not put a wedding garment on!" Remember to whom Christ speaks! The leaders of His day rejected Him—would not don His teaching or accept His person. Perhaps some being called today are also rebelling at the idea of making the effort to become righteous. Is there not a tendency today to take God's way lightly, lukewarmly, as we pursue our business and the cares and entertainment of this life?
Jesus describes one of the groups as wise and the other as foolish. The wise virgins are intelligent, practical, and careful, but the foolish are dull-minded, unrealistic, and careless. "Foolish" is translated from the Greek word moros, from which derives the English word "moron." Their conduct warranted their uncomplimentary description—after all, are we not known by our fruit or the lack of it (Matthew 7:17-20)? The major difference between the wise and the foolish is found in their attitudes. The moronic attitude is spiritually poor, blind, and naked because it has no true vision of the future (Revelation 3:14-22), even though God and His Son have plainly set into motion God's wonderful plan of salvation. The foolish virgins do not recognize the presence of any real sin in their lives. They are spiritually lukewarm.
Martin G. Collins
Parable of the Ten Virgins (Part Two)