1 Peter 2:5 Ye also, as lively stones, are built up a spiritual house, an holy priesthood, to offer up spiritual sacrifices, acceptable to God by Jesus Christ.
God makes two promises: one, that we will be built up into a spiritual house, the invisible Church on earth; and two, that this House, and the living stones in it, will be a holy priesthood, making spiritual sacrifices acceptable to God.
When we are baptized and come to faith in Christ we become a living stone that is placed by God in the spiritual house of believers. We have a function and a role in the Body of Christ according to our gifts and calling. The promise for each believer is that he/she is a part something big and eternal, and that there is a purpose and a role for each life in Christ. Life has meaning.
Secondly, we will be priests in the priesthood of all believers. A priest is a person who presents people to God and represents them to Him. The priests of the priesthood of all believers make spiritual sacrifices for the good of other people. We sacrifice our time, money, and effort to pray for others, to act kindly to all, and to witness to others.
Called and functioning as priests, we fulfill the promise of Jesus to be the salt of the earth and the light of the world. ”You are salt…you are light.” This is not a command; it is a promise. Whether we always see it or not, Christians make a difference in the world and are an influence for good. Enjoy the promise of being a living stone and a priest.