en_tn_condensed/mat/22/44.md

The Lord said

Here "Lord" refers to God the Father.

to my Lord

Here "Lord" refers to the Christ. Also, "my" refers to David. This means the Christ is superior to David.

Sit at my right hand

"Sit in the place of honor beside me"

until I make your enemies your footstool

"until I conquer your enemies" or "until I make your enemies bow down before you"