The term "foolish virgins" refers to a parable told by Jesus in Matthew 25:1-13, commonly known as the Parable of the Ten Virgins. In this parable, ten virgins were waiting for the bridegroom to arrive for a wedding feast. Five of them were wise and brought extra oil for their lamps, while the other five were foolish and did not prepare adequately, bringing only their lamps without additional oil. When the bridegroom delayed, the foolish virgins ran out of oil and were unable to enter the wedding banquet when he arrived. The "foolish virgins" symbolize those who are unprepared for the return of Christ or the coming of the Kingdom of Heaven. This parable emphasizes the importance of being spiritually prepared and vigilant, as the exact time of Christ's return is unknown (Matthew 25:13). The foolish virgins' lack of preparation led to their exclusion from the wedding feast, which serves as a warning about the consequences of spiritual negligence and the necessity of maintaining one's faith and readiness at all times.