Beginning from the baptism of John,
unto that same day that he was taken up from us,
must one be ordained to be a witness with us of his resurrection.
Acts 1:22
That Discipleship transferred to Christ at is baptism-
The next day John seeth Jesus coming unto him, and saith,
Behold the Lamb of God, which taketh away the sin of the world.
John 1:29
They would be distinguished from the "elders" of the Church-
And the apostles and elders came together for to consider of this matter.
Acts 15:6