Why don't you meet in a church building?

From Pastor Mike Newburger:

Here is a question that I get all the time, "Why don't you meet in a church building?"  We would love to! Every large, old church building you see in the neighborhood didn't start that way. Many were started in the living rooms of the church members. In the last few decades many of these old buildings have been sold off and converted into residential spaces. In Greenpoint, the population is rising, but the number of churches is declining. So we are starting a new church the same way churches have been started since the time of Christ: reaching people one at a time with the gospel. As our church grows we will undoubtedly move locations many times, and would even love to save one of the old church buildings of the neighborhood before it is lost. For now, we are renting commercial space on West Street because that is what we can afford. No matter what the future holds we know that the church is the people who assemble together, not the building.

These things write I unto thee, hoping to come unto thee shortly: But if I tarry long, that thou mayest know how thou oughtest to behave thyself in the house of God, which is the church of the living God, the pillar and ground of the truth.
— 1 Timothy 3:14-15