concecrate word is associate with the sacred
A 'normal' Christians responsibility to concecrate and dedicate to proclame God's Word to all creating so God can save; through the work on the cross of Jesus Christ.
This question may refer to the Missionaries of the Mormon Church; The Church of Jesus Christ of Latter-Day Saints. Mormon Missionaries are unpaid volunteers who actively seek individuals interested in learning more about the Restored Gospel of Jesus Christ. As Christians, they believe that Jesus Christ is our Savior, and that God is our Heavenly Father. They believe this with such strong conviction (aka: Testimonies), that they volunteer to concecrate 1.5 to 2.0 years of their lives to serving a mission. Mormon Missionaries always travel in groups of 2 or more; two male missionaries are called 'Elders', even though they're 19 or 20 years old. Two lady missionaries are called 'Sisters'.
Short answer:To set aside from profain (not sacred) and make holy.Long Answer:Check this out:http://www.newadvent.org/cathen/04276a.htmHere's a little bit from that page:Consecration, in general, is an act by which a thing is separated from a common and profane to a sacred use, or by which a person or thing is dedicated to the service and worship of God by prayers, rites, and ceremonies. The custom of consecrating persons to the Divine service and things to serve in the worship of God may be traced to the remotest times. We find rites of consecration mentioned in the early cult of the Egyptians and other pagan nations. Among the Semitic tribes it consisted in the threefold act of separating, sanctifying, or purifying, and devoting or offering to the Deity. In the Hebrew Law we find it applied to the entire people whom Moses, by a solemn act of consecration, designates as the People of God. As described in the Book of Exodus (24), the rite used on this occasion consisted...
Durring the Mass, in specific, at the beginning part of the Liturgy of the Eucharist, the priest receives the Bread and Wine from the Comunity. when the alter is "Dressed" that is, the alter is all prepared for the Liturgy, the Priest takes the Bread and prayes over it. he does the same thing for the wine. then, after wards, he asks God to clean the priest of all his sins, so the priest is pure enough to concecrate the bread and wine and turn them into the Body and Blood of the Lord Jesus Christ.