Jamieson, Fausset and Brown on Psalms 68:18

18. From the scene of conquest He ascends to His throne, leading--

captivity captive--or, "many captives captive" (Jud 5:12).

received gifts for men--accepting their homage, even when forced, as that of rebels.

that the Lord God might dwell--or literally, "to dwell, O Lord God" (compare Psa 68:16)--that is, to make this hill, His people or Church, His dwelling. This Psalm typifies the conquests of the Church under her divine leader, Christ. He, indeed, "who was with the Church in the wilderness" (Ac 7:38) is the Lord, described in this ideal ascension. Hence Paul (Ep 4:8) applies this language to describe His real ascension, when, having conquered sin, death, and hell, the Lord of glory triumphantly entered heaven, attended by throngs of adoring angels, to sit on the throne and wield the scepter of an eternal dominion. The phrase "received gifts for (or literally, among) men" is by Paul, "gave gifts to men." Both describe the acts of a conqueror, who receives and distributes spoils. The Psalmist uses "receiving" as evincing the success, Paul "gave" as the act, of the conqueror, who, having subdued his enemies, proceeds to reward his friends. The special application of the passage by Paul was in proof of Christ's exaltation. What the Old Testament represents of His descending and ascending corresponds with His history. He who descended is the same who has ascended. As then ascension was an element of His triumph, so is it now; and He, who, in His humiliation, must be recognized as our vicarious sacrifice and the High Priest of our profession, must also be adored as Head of His Church and author of all her spiritual benefits.