Psalm 110 kicks off a section of psalms which call us to praise the Lord for his committed everlasting love to his people. It provides the basis for that praise in his priest king, who will deliver his promised future salvation.
The priest king
Psalm 110:1-7
Sit at My Right Hand
A Psalm of David.
The Lord says to my Lord:
“Sit at my right hand,
until I make your enemies your footstool.”
2 The Lord sends forth from Zion
your mighty scepter.
Rule in the midst of your enemies!
3 Your people will offer themselves freely
on the day of your power,
in holy garments;
from the womb of the morning,
the dew of your youth will be yours.
4 The Lord has sworn
and will not change his mind,
“You are a priest forever
after the order of Melchizedek.”
5 The Lord is at your right hand;
he will shatter kings on the day of his wrath.
6 He will execute judgment among the nations,
filling them with corpses;
he will shatter chiefs
over the wide earth.
7 He will drink from the brook by the way;
therefore he will lift up his head.

