Jesus often referred to Himself as the "Good Shepherd." Which Gospel contains this metaphor?

The Gospel that contains the metaphor of Jesus referring to Himself as the "Good Shepherd" is the Gospel of John.
In John 10:11, Jesus says, "I am the good shepherd." He goes on to explain that a good shepherd is someone who lays down his life for his sheep, while a hired hand would run away and abandon the sheep. Jesus emphasizes his love and care for his followers, comparing himself to a shepherd who protects and guides his flock.
This metaphor of Jesus as the good shepherd highlights his role as a leader and protector of his followers. It reinforces the idea that Jesus is willing to sacrifice himself for the well-being of his people. Just as a shepherd watches over his sheep, Jesus watches over and cares for his disciples.
The Gospel of John contains several instances where Jesus uses metaphors to illustrate his teachings and reveal his identity. The metaphor of the "Good Shepherd" is one of these powerful illustrations. It helps us understand Jesus' deep love and commitment to his followers, as well as his willingness to lead them on the right path.
So, to recap, the metaphor of Jesus referring to himself as the "Good Shepherd" can be found in the Gospel of John.