Why is Christ referred to as the 'apple of His eye' for believers?

The phrase 'apple of His eye' signifies the careful and tender protection that God provides for His people. In Deuteronomy 32:10, it reflects God's commitment to keep His elect secure in Christ. Just as we instinctively protect our own eyes from harm, God guards His children with the same care and vigilance. This imagery illustrates the intimate relationship between Christ and His believers, where He is not only our Savior but also our protector and sustainer. As believers, understanding that we are kept as the apple of His eye underscores the assurance that no one can pluck us from His hand and that we are eternally secure in Him.