How do we know Christ will fight for His people?

In Revelation 2:16, Christ assures the church in Pergamos that He will come to fight against those who promote false teachings and lead His people astray. The imagery of the 'sharp sword' signifies not only judgment but also the power of His word, which is described as living and active in Hebrews 4:12. This sword represents Christ's authority to defend His church against the deceptions of the enemy and maintain the truth of the gospel. Therefore, believers can rest in the assurance that Christ fights for them through His word and will protect them from falsehood as they stand firm in faith.