What Does “Make ready” Mean in the Bible?
To prepare something, to have it ready. The “harness” is what is put on a donkey or a horse to ride it.
Where it appears in the Bible
Isaiah 40:3; Genesis 22:3
What the Bible says
Isaiah 40:3
The voice of one crying in the desert: Prepare ye the way of the Lord, make straight in the wilderness the paths of our God.
Genesis 22:3
So Abraham rising up in the night, saddled his ass: and took with him two young men, and Isaac his son: and when he had cut wood for the holocaust he went his way to the place which God had commanded him.
Douay-Rheims Bible (Challoner revision), public domain.
Source: RAE, “aparejar” and “aparejo”