1Ti 3:15 but if I tarry long, that thou mayest know how men ought to behave themselves in the house of God, which is the church of the living God, the pillar and ground of the truth.
It seems that this verse states that the house of God is the Church of the only living God, which is the pillar and ground of truth.
The question then arises:
If a building full of people is not teaching the truth about the living God (Jesus) can that building and group of people be called a Church (the house of the living God)?
For example if a group of people meeting in a building teach and believe that one must do something in addition to the work that Christ did on the Cross before they can be regenerated, could this group be called a church as defined in the word of God?
This leads to the another question:
Are there any untruths that can be taught or believed by any group and still be considered a Church according to Godís word?