Del. Code tit. 27, § 112

No grant, conveyance, devise or lease of personal or real estate to, nor any trust of such personal or real estate for the benefit of any person, and that person’s successor or successors in any ecclesiastical office, shall vest any estate or interest in such person or such person’s successor. No such grant, conveyance, demise or lease to or for any such person by the designation of any such office shall vest any estate or interest in any successor of such person. This section shall not be deemed to admit the validity of any such grant, conveyance, devise or lease made prior to its enactment.