From the Roman Pontifical:
Candidates kneel before the bishop.
Come to our help,
Lord, holy Father, almighty and eternal God;
you are the source of every honor and dignity,
of all progress and stability.
You watch over the growing family of man
by your gift of wisdom and your pattern of order.
When you had appointed high priests to rule your people,
you chose other men next to them in rank and dignity
to be with them and to help them in their task;
and so there grew up
the ranks of priests and the office of levites,
established by sacred rites.
In the desert
you extended the spirit of Moses to seventy wise men
who helped him to rule the great company of his people.
You shared among the sons of Aaron
the fullness of their father's power,
to provide worthy priests in sufficient number
for the increasing rites of sacrifice and worship.
With the same loving care
your gave companions to your Son's apostles
to help in teaching the faith;
they preached the Gospel to the whole world.
grant also to us such fellow workers,
we are weak and our need greater.
grant to these servants of yours
the dignity of the priesthood.
Renew within them the Spirit of holiness.
As co-workers with the order of bishops
may they be faithful to the ministry
that they receive from you, Lord God,
and be to others a model of right conduct.
May they be faithful in working with the order of bishops,
so that the words of the Gospel may reach the ends of the earth,
and the family of nations,
made one in Christ,
may become God's one, holy people.
We ask this through our Lord Jesus Christ, your Son,
who lives and reigns with you and the Holy Spirit,
one God, for ever and ever.