30. first-born of . . . poor--Hebraism, for the
most abject poor; the first-born being the foremost of the family.
Compare "first-born of death"
(Job 18:13),
for the most fatal death. The Jews, heretofore exposed to
Philistine invasions and alarms, shall be in safety. Compare
Ps 72:4,
"Children of the needy," expressing those "needy in condition."
feed--image from a flock feeding in safety.
root--radical destruction.
He shall slay--Jehovah shall. The change of person, "He" after "I,"
is a common Hebraism.
JFB.
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