Who is a priest today?

Who are priests in the church today? 
BQ: Who are the priests in the church today?  In Exodus 19:6, God shows that it was His plan that all the Israelites should be a nation of priests.

Q:Who are priests in the new testament?
A: 1 Pet 2:5; 9-10, Rev 1:6

If you're a Christian based on the Bible's definition, you're a priest! "But you are a chosen race, a royal priesthood, a holy nation, a people for God’s own possession." As priests, you can offer up spiritual sacrifices and draw near to God through our high priest and mediator, Jesus! See Mt 23:5-12, Heb 4:14-16 for further reference.
(PN3)

Whose church?

BQ: I've often heard people say things like, "Guy X is the head of that church." What's wrong with that?

A: God says in Eph 5:23, "For the husband is the head of the wife, as Christ also is the head of the church, He Himself being the Savior of the body." None of us lived a perfect life and sacrificed themselves to purchase the church, so no man will ever be the "head of the church." 

If we claim to be disciples of Christ, we must imitate our teacher. Mt 20:25-28 says, "‘You know that the rulers of the Gentiles lord it over them, and their great men exercise authority over them. It is not this way among you, but whoever wishes to become great among you shall be your servant, and whoever wishes to be first among you shall be your slave;  just as the Son of Man did not come to be served, but to serve, and to give His life a ransom for many.’"

What track event is being a Christian like?

What does it profit?
BQ: It's Easter. The churches were packed today; articles in the paper talked about how people make sure to attend on Easter. Many people reassure themselves that they're "Christian" and going to heaven by showing up once or twice a year.

Q: What track event does the Bible compare being a Christian to? What does he say about the assembly? 
A: 2 Tim 4:7 & 1 Cor 9:24. Acts 20:7, 1 Cor 14:23;26, Heb 10:25

Being a Christian is likened by God to a race. There is a prize at the end.  Often God asks what "profit" there is in something. Being a Christian is also a marriage of the church to Christ.

Here are some things to consider: we're told to hold fast to the things given to us. One of those is the assembly on the Lord's day. It isn't one day a year, or two. Would you win a race by exercising once a year? Would you make much profit if you went to work once a year? Would your marriage do well if you professed your love and saw your wife only once a year? What about twice? 

Are you trying to serve your own self, or are you giving God's race all you've got? Those who sit on the sidelines will not get a reward. 2 Thess 3:10 applies to the spiritual health of a person. "if anyone is not willing to work, then he is not to eat, either." Let's work for the Lord every day! 
(PN63)