What does the Bible say about being lukewarm in faith?

In Revelation 3:15-16, the Lord addresses the church at Laodicea, condemning their lukewarmness. This state is characterized by indifference and a false sense of self-sufficiency, which makes one spiritually blinded to their true condition before God. The church was filled with riches and comforts yet lacked the fervency and desire for spiritual truth that comes from a genuine relationship with Christ. The Lord warns that such lukewarmness leads to spiritual rejection, saying He would 'spew' them out of His mouth, indicating the seriousness of complacency in one’s faith. A true believer recognizes their need for Christ, unlike the lukewarm, who often feel no need for His correction or grace.