Instill what doctrine? The organized 'church's doctrine or NT doctrine?
There is only one true doctrine and that is what Christ taught Himself and through those He guided in writing His Holy Word.
If it don't agree with the Word it ain't doctrine.
But this is my point in this thread.
If we as individuals and local congregations were doing as Jesus commanded, ( going, making disciples, baptizing, and teaching doctrine) the Lord would bless much more that when we complain about how or where we gather to study and worship.
Just what is more important, where we gather ( house, church building, under a tree) or winning the lost, baptizing them and teaching them?