From what I've heard during discussions, most people tend to view Israel's priests rather one dimensionally, as the ones who offered sacrifice in the Tabernacle, and later the Temple. The priests had quite a diverse job description, however. They were, of course, priests offering sacrifices and going to God on behalf of their people, but they were also teachers going to their people on behalf of God. It was the priests who passed on all of God's instructions to Israel. Without them, God's words to Moses would have mostly stayed with Moses. As if that wasn't enough, the priests also acted as Israel's doctors, seeing to the health of a nation. They were the ones given the task of keeping disease outbreaks in check. They were the ones to examined the sick. They were the ones who were supposed to watch over individuals while they healed. Being a priest was no simple task; it was quite a calling.
In the New Testament Christians are called the "priesthood of believers." It might be a good idea to keep in mind the job description that goes along with that calling before we start bragging about our new title.