What is the relationship between Jesus and sheep?

Sheep are Christians, sheep are churches, and Jesus is a shepherd.

Jesus said to the Jews in Jerusalem, You don't believe, because you are not my sheep. My sheep listen to my voice, and I know them, and they follow me; And I gave them eternal life, and they will never perish, and no one can take them away from me. My father gave me sheep. He is greater than all things, and no one can take them away from my father (about 10: 26-29).

The lyrics of the Christian song "Listen Gently" can well illustrate this relationship:

Listen, I want to listen, I want to listen to the voice of my Lord. Listen, he's listening. My shepherd knows my voice. He is a great shepherd and the master of life. I have only listened to the voice of the Lord all my life. He is a great shepherd and the master of life. My shepherd knows my voice.