Thought (διενθυμουμενου). Genitive absolute of present middle participle of διενθυμεομα, a double compound (δια and εν- with θυμος) and another απαξ λεγομενον save in ecclesiastical writers, though ενθυμεομα is common enough and Textus Receptus so reads here. Peter was revolving in his mind, through and through, in and out, to find the meaning of the strange vision.