You may cast this spell upon yourself, or you may cast this spell upon another paladin, but only if the other paladin has witnessed the holy beacon in question. Any and all items or objects the transported paladin is carrying will be teleported along with her to the side of the distressed paladin who sent the holy beacon, but no other living creatures (including mounts) may be teleported.
There is no room for the spell wrong in terms of where the teleporting paladin is relocated; in this sense, the spell works like teleport without error. In addition, the paladin will appear in the nearest safe point to her comrade. For example, if a beacon-warded paladin had been knocked unconscious by a band of ratmen and then suspended over a fiery, subterranean lava flow, then this spell might place the rescuing paladin on the banks of the fiery river.
The casting of this spell involves uttering a prayer while placing one's hand over one's eyes, as if looking for something far off in the distance.