What does the Bible say about Christ as the good shepherd?

In John 10, Christ identifies Himself as the good shepherd, a profound statement that underscores His role as protector and sacrificial Savior. He lays down His life for the sheep, demonstrating His immense love and commitment to those He has chosen. This relationship is not one of mere guidance; it's a deep, sacrificial bond wherein the shepherd takes the ultimate sacrifice for the safety and well-being of His flock. Notably, as the good shepherd, He ensures that every one of His sheep is not lost, affirming the security of salvation for those who belong to Him.