How do we know that Christ will preserve His church?

The assurance of Christ’s preservation of His church rests on His nature as the sovereign and all-powerful head. Jesus stated that all those given to Him by the Father will not perish (John 10:28-29). Since He possesses complete authority in heaven and on earth, He ensures that none of His members can be lost. This security is not based on human merit or effort but on His covenantal promise and the eternally ordered plan of redemption that guarantees every believer’s eternal safety in Him. Philippians 1:6 reassures us that He who began a good work in us will perfect it until the day of Christ Jesus.