None of them!
The United Nations has no right to make such a declaration, though the way things are going they're going to eliminate national sovereignty, personal rights, personal property, personal freedom (including religious freedom), and much more (see Agenda 21).
I'm Christian and I have a fondness for Taoism and Buddhism as well as Judaism, but we each need to have the freedom to choose our own path.
Christianity has already been co-opted by forces of evil, so every denomination is corrupt to one degree or another. Each one is clamoring to be "first," which will put them last in the eyes of the Lord.
It has to do with ego which is the only reason for this Rescue Mission. Ego is what perverts religion, governments, corporations and everything else in human society.
The forces of evil have bubbled to the top of Earth society. They are the only ones willing to be so egotistical -- the Rockefellers, Rothschilds, Obamas, Bushes and their ilk.
Religion is about personal, spiritual reawakening. This isn't some cafeteria, fast-food thing you can dish out to the masses.
If the UN were to make that announcement while I'm still alive, I would spit on it for the abomination it is.
Truth is truth and the UN is diametrically opposed to it, but so are most believers. Ego is the culprit.
Humility and love are the answer, but we should not compromise on matters of spiritual progress. Nothing in the universe is as important.