Rare arisings

Bhikkhus, the arising of three things are rare in the world. What three? The arising of the Thus Gone One, worthy and rightfully enlightened is rare the world. A person who preaches the Teaching and Discipline declared by the Thus Gone One is rare in the world. A person who has gratitude and returns it, is rare in the world. Bhikkhus, the arising of these three things are rare in the world.