"The Lord hath ordained that in every city a House of Justice be established wherein shall gather counselors to the number of Bahá" --Kitab i Aqdas, Paragraph 30
"O My Branches! In this Existent Being the greatest strength and the most perfect power is hidden and concealed; look towards It and gaze in the direction of Its union and not at Its seeming differences. This is the Testament of God that the Branches, Twigs, and Relations must each and every one...
1. Baha'u'llah discusses several things in the Kitab i Ahd, but successorship is the most important. He says after he dies to turn to Abdul Baha, and then to Mirza Muhammad Ali (the founder of Unitarian Baha'ism) after him.
2. Not only does Baha'u'llah never grant Abdul Baha infallibility, but...