David was in anguish when he wrote this psalm because of what Saul did to the priests of God (1 Sam 21:1-9, 22:6-23).
When David heard from Abiathar, the son of Ahimelech about what had happened to the priesthood family, he said in 1 Sam 22 “I have brought about the death of every person in your father’s household.”
Doeg was an Edomite, a descendant from Esau, the enemy of Jacob. He is Saul’s head shepherd (1 Sam 21:7). This represents the battle of flesh and spirit.
“Mighty man” was referring to Saul or Doeg (v1)
v2 [worker of deceit]: Doeg deceits Saul to kill the priests family.
v4: [deceitful tongue] Doeg was deceitful because he didn’t tell Saul the whole story. He didn’t tell Saul David was pretended to be on a secret mission serving Saul.
Verse 5 is the turning point of this Psalm. God will ultimately judge Saul and Doeg for what they will do the priests family in Nob. (v5)
Wait for Your name: to hope and depend on the character of God as expressed in His great name. (v9).
Saul ended up death in a battle with Philistine, and his head was cut off by Philistine and his body was hung on the wall of Beth Shan (1 Sam 31).
Doeg death was not mentioned explicitly in the bible, however some Rabbis suggested that young man who told David about the death of Saul, and later killed by David was Doeg (2 Sam 1:15), although the young man identified himself as a Amalekite (2 Sam 8).