What monks are:
A man who has withdrawn from the world for religious reasons, especially as a member of an order of cenobites living according to a particular rule and under vows of poverty, chastity, and obedience.
How monks function:
CLOISTER: to seclude or shut up in or as if in a convent or monastery. "the monastery was where the Brothers would cloister themselves to meditate"
What missionaries are:
A person sent (into the world) on a religious mission, especially one sent to promote Christianity in a foreign country. evangelist, apostle proselytizer, preacher, minister, priest.
How missionaries function:
EVANGELIZE: to tell people about Christianity in order to persuade them to become Christians
Brothers! Monks are not Missionaries and Missionaries are not monks. To blur the lines is to fail to grasp the calling of each. In particular, Missions of Orthodox parishes are to be outward in evangelical efforts to reach people for Christ and bring people into the church. They are not to cloister and just pray. Monks do that. Pray yes, always and without ceasing, but cloister with just family members and a few faithful?--No!
He said to them, “Go into all the world and preach the gospel to all creation. Whoever believes and is baptized will be saved, but whoever does not believe will be condemned. And these signs will accompany those who believe: In my name they will drive out demons; they will speak in new tongues; they will pick up snakes with their hands; and when they drink deadly poison, it will not hurt them at all; they will place their hands on sick people, and they will get well.”