Messiah's victory over His enemies will be great. David saw Messiah presently seated at God the Father's right hand (cf. Heb. 8:1; 10:12). In the future He will get off that throne to wage war (cf. Joel 3:2, 11-14; Rev. 16:16; 19:13-15). Messiah's drinking by a brook pictures Him renewing His strength. Yahweh will exalt Messiah because of His victorious conquest.182
Later revelation helps us understand that Messiah will come back to the earth with His saints; He will not wage this particular war from heaven (Zech. 14:4; Rev. 19). He will fight against the nations that oppose Him at the end of the Tribulation. This is the battle of Armageddon (Dan. 11:36-45; Rev. 19:17-19). Following victory in that battle He will rule on the earth for 1, 000 years (Rev. 20:1-10).
The Epistle to the Hebrews expounds this psalm. It clarifies especially how Jesus Christ fulfilled what David prophesied here about Messiah being a king priest (cf. Zech. 6:12-13).183