Pope St Pius V "whoever receives the one I send receives me"

"When Jesus had washed the disciples’ feet, he said to them:
“Amen, amen, I say to you, no slave is greater than his master
nor any messenger greater than the one who sent him.
If you understand this, blessed are you if you do it.
I am not speaking of all of you.
I know those whom I have chosen.
But so that the Scripture might be fulfilled,
The one who ate my food has raised his heel against me.
From now on I am telling you before it happens,
so that when it happens you may believe that I AM.
Amen, amen, I say to you, whoever receives the one I send
receives me, and whoever receives me receives the one who sent me."

- Jn 13:16-20


"Holy Orders is the sacrament through which the mission entrusted by Christ to his apostles continues to be exercised in the Church until the end of time: thus it is the sacrament of apostolic ministry. It includes three degrees: episcopate, presbyterate, and diaconate.
 
"(On the institution and mission of the apostolic ministry by Christ, see above, no. 874 ff. Here only the sacramental means by which this ministry is handed on will be treated.)

- CCC 1536