13:1 A dreamer of dreams - One that pretends God hath revealed himself to him by visions or dreams. Giveth a sign or wonder - That is, shall foretell some strange and wonderful thing.

Deuteronomy 13:1 Parallel Commentaries

Jewish Homes
It may be safely asserted, that the grand distinction, which divided all mankind into Jews and Gentiles, was not only religious, but also social. However near the cities of the heathen to those of Israel, however frequent and close the intercourse between the two parties, no one could have entered a Jewish town or village without feeling, so to speak, in quite another world. The aspect of the streets, the building and arrangement of the houses, the municipal and religious rule, the manners and customs …
Alfred Edersheim—Sketches of Jewish Social Life

Deuteronomy
Owing to the comparatively loose nature of the connection between consecutive passages in the legislative section, it is difficult to present an adequate summary of the book of Deuteronomy. In the first section, i.-iv. 40, Moses, after reviewing the recent history of the people, and showing how it reveals Jehovah's love for Israel, earnestly urges upon them the duty of keeping His laws, reminding them of His spirituality and absoluteness. Then follows the appointment, iv. 41-43--here irrelevant (cf. …
John Edgar McFadyen—Introduction to the Old Testament