John Trapp on Jeremiah 17:20

Ver. 20. Ye Kings of Judah] Magiſtrates being Lord-keepers of both the Tables of the Law, ſhould carefully ſee to it, that both be duely obſerved. Our King Edgar made laws for the ſanctification of the Lords-day-Sabbath, as have alſo our preſent Governours,Jer. Dike of Conſc. Eſtine in lib. Sentent. diſtinc. 11. cap. 2. to their laſting renowne. The firſt blow given to the German Churches was on the Lords-day, which they careleſly obſerved: for on that day was Prague loſt: as was likewiſe Conſtantinople, on Whit-ſunday, as they called it.