But long before the advent of Christ, the original purpose of the Sabbath had come to be largely ignored in Israel; and the spirit of its observance had been smothered under the weight of rabbinical injunction and the formalism of restraint. In the time of the Lord's ministry, the technicalities prescribed as rules appended to the law were almost innumerable; and the burden thus forced upon the people had become well nigh unbearable. Among the many wholesome requirements of the Mosaic law, which the teachers and spiritual rulers of the Jews had made thus burdensome, that of Sabbath observance was especially prominent. The "hedge," which by unwarranted assumption they professedly set about the law,[440] was particularly thorny in the sections devoted to the Jewish Sabbath. Even trifling infractions of traditional rules were severely punished, and the capital penalty was held before the eyes of the people as a supreme threat for extreme desecration.[441] THE HEALING OF A CRIPPLE ON THE SABBATH. In view of these conditions, we are not surprized to find our Lord confronted with charges of Sabbath violation relatively early in the course of His public work. An instance attended with many great developments is recorded by John,[442] whose narrative covers the incident of a very impressive miracle. Jesus was again in Jerusalem at the time of one of the Jewish festivals.[443] There was a pool of water, called Bethesda, near the sheep market in the city. From the recorded description, we may understand this to have been a natural spring; possibly the water was rich in dissolved solids or gases, or both, making it such as we would call today a mineral spring; for we find that the water was reputed to possess curative virtues, and many afflicted folk came to bathe therein. The spring was of the pulsating variety; at intervals its waters rose with bubbling disturbance, and then receded to the normal level. Mineral springs of this kind are known today in many parts of the world. Some believed that the periodical upwelling of the Bethesda waters was the result of supernatural agency; and it was said that "whosoever then first after the troubling of the water stepped in was made whole of whatsoever disease he had." The Bethesda pool was wholly or partly enclosed; and five porches had been built for the shelter of those who waited at the spring for the intermittent bubbling up of the water.