I chose out their way - that is, I willingly went up to their assembly (from my country residence, Job 29:7).
in the army - as a king supreme in the midst of his army.
comforteth the mourners - Here again Job unconsciously foreshadows Jesus Christ (Isa 61:2, Isa 61:3). Job’s afflictions, as those of Jesus Christ, were fitting him for the office hereafter (Isa 50:4; Heb 2:18).