Psalms 68:14-18

Verse 15

The hill of God is as the hill of Bashan - This and the following verse should be read thus: "Is Mount Bashan the craggy mount, Mount Bashan, the mount of God? Why envy ye, ye craggy mounts? This is the mount of God in which he has desired to dwell." The Targum countenances this translation: Mount Moriah, the place where our fathers of old worshipped God, is chosen to build on it the house of the sanctuary, and Mount Sinai for the giving of the law. Mount Bashan, Mount Tabor, and Carmel are rejected; they are made as Mount Bashan."
Verse 16

Why leap ye, ye high hills? - "God said, Why leap ye, ye high hills? It is not pleasing to me to give my law upon high and towering hills. Behold, Mount Sinai is low; and the Word of the Lord has desired to place on it the Divine majesty. Moreover, the Lord dwells for ever in the heaven of heavens." - Targum.

The psalmist is speaking particularly of the mountains of Judea, and those of Gilead; the former were occupied by the Canaanites, and the others by Og, king of Bashan, and Sihon, king of the Amorites, whom Moses defeated.
Verse 17

The chariots of God are twenty thousand - רבתים אלפי שנאן ribbothayim alpey shinan, "two myriads of thousands doubled." Does not this mean simply forty thousand? A myriad is 10,000; two myriads, 20,000; these doubled, 40,000. Or thus: 10,000 + 10,000 + 20,000 = 40,000. The Targum says, "The chariots of God are two myriads; two thousand angels draw them; the majesty of God rests upon them in holiness on Mount Sinai." But what does this mean? We must die to know.
Verse 18

Thou hast ascended on high - When the ark had reached the top of Sion, and was deposited in the place assigned for it, the singers joined in the following chorus. This seems to be an allusion to a military triumph. The conqueror was placed on a very elevated chariot.

Led captivity captive - The conquered kings and generals were usually tied behind the chariot of the conqueror - bound to it, bound together, and walked after it, to grace the triumph of the victor.

Thou hast received gifts for men - "And gave gifts unto men;" Eph 4:8. At such times the conqueror threw money among the crowd. Thou hast received gifts among men, באדם baadam, In Man, in human nature; and God manifest in the flesh dwells among mortals! Thanks be to God for his unspeakable Gift! By establishing his abode among the rebellious the prophet may refer to the conquest of the land of Canaan, and the country beyond Jordan.

Yea, for the rebellious also - Even to the rebellious. Those who were his enemies, who traduced his character and operations, and those who fought against him now submit to him, and share his munificence; for it is the property of a hero to be generous.

That the Lord God might dwell among them - יה אלהים yah Elohim, the self-existing God; see on Psa 68:4 (note). The conqueror now coming to fix his abode among the conquered people to organize them under his laws, to govern and dispense justice among them. The whole of this is very properly applied by St. Paul, Eph 4:5, to the resurrection and glory of Christ; where the reader is requested to consult the note.
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