How do we know that Christ will keep His church safe?

The security of the church is guaranteed by Christ Himself, as stated in Isaiah 49:17, where He promises, 'thy destroyers and they that made thee waste shall go forth of thee.' This assurance extends to all forms of threats, including those that may not be immediately visible, such as false teachings that can lead believers astray. Christ affirms that His sheep hear His voice and will not follow strangers (John 10:27), illustrating that His divine protection extends over His elect, ensuring that they are preserved in faith until the end, no matter the trials they may face.