choose, ordain

Concise Bible Dictionary:

In the New Testament there are ten words translated “ordain.” The passages that might seem to have some reference to the impartation of a sacerdotal supremacy are:
1. Christ ordained his twelve apostles (Mark 3:1414And he ordained twelve, that they should be with him, and that he might send them forth to preach, (Mark 3:14)). Here the word is ποιέω, “to do, make.”

Strong’s Dictionary of Greek Words:

Greek:
χειροτονέω
Transliteration:
cheirotoneo
Phonic:
khi-rot-on-eh’-o
Meaning:
from a comparative of 5495 and τείνω (to stretch); to be a hand-reacher or voter (by raising the hand), i.e. (generally) to select or appoint
KJV Usage:
choose, ordain