What does it mean to have oil in our lamps?

In the parable of the ten virgins, the oil in the lamps represents the genuine faith and grace that sustain a believer. The wise virgins had oil, illustrating that they were equipped with the spiritual discernment and vitality necessary for the return of the bridegroom, symbolizing Christ. This oil is a metaphor for the inner work of the Holy Spirit who instills faith and belief in God's promises. Only those filled with this grace can endure until the end and partake in the eternal marriage feast with Christ, underscoring the importance of genuine, God-given faith.