I also used a biblical allusion-the apple of my eye from Deuteronomy in the Old Testament, "My apple of my eye, my baby, my beloved thing". Moses, the Jewish prophet, led the Israelites into and out of Egypt, and finally entered the promised land of Cannon, saying: God protects them and loves them as if they were the apple of his eye. He protects them and cares about them as if he were the apple of his eye. Later, people used "the apple of their eye" to mean "the apple of their eye".

The apple of your eye: a very precious thing (the definition of Webster's dictionary)