The use of. varied vocabulary is no proof of. different authorship. It is necessitated by the changes of subject.
burden. Divine declaration. Hebrew. massa'. Compare Isaiah 13:1.Nahum 1:1.
of. that is to say. Genitive of Apposition. See App-17.
the LORD. Hebrew. Jehovah. App-4.
in: or, on: i.e. resting on.
Hadrach.. country in the neighborhood of Damascus and Hamath (Zechariah 9:2) &c., mentioned in the Assyrian Inscriptions, with the 'arka of Genesis 10:17.
the rest thereof. its resting place: i.e. the burden will rest upon it.