How hast thou helped him that is without power? how savest thou the arm that hath no strength?
Without power ... no strength ... no wisdom. The negatives are used instead of the positives, powerlessness, etc., designedly (so Isaiah 31:8; Deuteronomy 32:21, "That which is not God ... those which are not a people"): Granting I am, as you say (Job 18:17; Job 15:2). powerlessness itself, etc. How hast thou helped such a one?
Savest - helpest, supportest.
Plentifully ... the thing as it is - rather, 'abundantly-wisdom' х tuwshiyaah (H8454)]. Bildad had made great pretensions to abundant wisdom. How has he shown it?