Finishing His Job...

The Lord is at your right hand;
he will shatter kings on the day of his wrath.
He will execute judgment among the nations,
filling them with corpses;
he will shatter chiefs
over the wide earth.
He will drink from the brook by the way;
therefore he will lift up his head.
(Psalm 110:5-7 ESV)
The first two verses of this Psalm of David speak of the Messiah as being a King and a Priest, established by God to do what needs to be done with mankind.  In this last verse, He is a powerful judge - not just of individuals, but of nations and their leaders.  He will not relent until his job is complete.  Like a warrior in pursuit of His enemies, He will simply stop on the way and scoop up some water before continuing on His quest.  Thus, the LORD is not slack in coming again in judgement. He will do so, completing His assignment over His creation. He will "lift up His head" to see the world that belongs to Him under His complete rule, those from every tribe, tongue and nation.  As with His being King and Priest, He is full qualified to be the Judge.