Ordination as WE know it today had its Roots in the times of Constantine.
The Male Clergy of the Catholic church [the ONLY  Christian organization in town] took on the Roles of Elite Rulers. They even took a lot of the robes and hats to show the various status groups. Even had certain chairs they sat in while at church.
Pious Women were URGED by the Men to enter Castles and pray, if they wanted a REAL part in Church. They were also clothed in black from head to toes, to wrists with only faces and hands showing. The MEN had the keys and locked them in and called the places Convents.
Pious Women in N. Italy, Central Europe were chased from place to place because they were unauthorized Female preachers [not men]. We still have some of their writings.
What I am trying to say is that Ordination as WE SDA's know it has its roots in OUR Catholic ancestors through Anglicans, Lutherans, Baptists, Methodists [Ellen and others], Presbys.
It has NO Biblical ROOTS.