When are shepherds last mentioned in the Bible?

It is last mentioned in 1^st Peter when he is encouraging elders to do their jobs well. He promises that the Chief Shepherd (Jesus) appears they will be rewarded.

Source: 1^st Peter 5:1-4

Using the Shepherd example Jesus prophesied Gentile believers. Where is this in the Bible?

When Jesus was teaching he mentioned other sheep not of this fold(Jews). He would bring them and combine the flocks.

Source: John 10:16

In the 23^rd Psalm who did King David refer to as his shepherd?

King David the shepherd king wrote. “The Lord is my shepherd I shall not want”

Source: Psalm 23:1

Jesus often referred to himself as a shepherd. In Bible order where in the New Testament did this first happen?

In Matthew’s account of the last Passover meal. While walking to the Mount of Olives. Jesus says strike the shepherd(himself) the the sheep(followers) will be scattered.

Source: Matthew 26:31

In what book of the Old Testament were Pastors associated with shepherds?

In the book of Jeremiah pastors and shepherds were associated. God through Jeremiah called out their sins and promised to send faithful shepherds for his people

Source: Jeremiah many references