What does the Bible say about spiritual lukewarmness?

The warning against spiritual lukewarmness is sharply presented in Revelation 3:15-16, where the Laodicean church is criticized for being neither hot nor cold. This metaphor implies that a lukewarm faith is unacceptable to God, as it reflects a lack of genuine devotion to Him. The church's self-sufficient attitude led them to believe they needed nothing, while in reality, they were spiritually poor, blind, and naked. God desires fervent worship and a passionate commitment to Him, which is essential for spiritual vitality and growth.