Delicately - This phrase is very obscure. The meaning of the word so rendered is “dainties, delights” Genesis 49:20; Proverbs 29:17; Lamentations 4:5, which hardly gives a tolerable sense here. Some understand it “fawningly, flatteringly,” with a view of appeasing Samuel. (Others alter the reading, and translate “in bonds.”)
Surely the bitterness ... - Agag hopes that his life will be spared, and so expresses his confident belief that the bitterness of death is over.