You speak truth, ModelBreaker. Pentecost killed religion--now it is simply "wherever two or more are gathered in my Name".
Someone forgot to tell the first Christians. Like, for instance, the bishop of Antioch, who was installed by the Apostles, and wrote, on his way to martyrdom in Rome, that to offer the Eucharist "behind the bishop's back" was no different than devil worship.
Someone even forgot to tell James, who was present at Pentecost, and later wrote: Pure and undefiled religion before God and the Father is this: to visit orphans and widows in their trouble, and to keep oneself unspotted from the world. (James 1:27)
(The verse you cite was addressed to the Apostles, not to everyone, and is not some sort of blanket permission to run off and start your own church.)