'Mission' in the Bible

These twelve Jesus sent on a mission, after giving them their instructions: "Go not," He said, "among the Gentiles, and enter no Samaritan town;

And Barnabas and Saul returned from Jerusalem, having discharged their mission, and they brought with them John, surnamed Mark.

and when they perceived the mission which was graciously entrusted to me, they (that is to say, James, Peter, and John, who were considered to be the pillars of the Church)

Their mission was not to kill, but to cause awful agony for five months; and this agony was like that which a scorpion inflicts when it stings a man.