“my father.” Here used as “mentor” and “guide.”
[For more information on the uses of “father” in the Bible, see commentary on Genesis 4:20. For information on the disciples of a Rabbi being called his “sons,” see commentary on Matthew 12:27. For information on the disciples of a Rabbi being called “orphans” if the Rabbi died or left the area, see commentary on John 14:18, “orphans.”]
“he took hold of his clothes and tore them in two pieces.” Tearing one’s clothing can be a sign of mourning or death, and Elisha knew he would never see Elijah again.