And the Lord said unto Moses,.... Out of the pillar of cloud:go on before the people, lead them on nearer to Mount Sinai or Horeb, within sight of which they now were. Jarchi adds, by way of explanation, "and see if they will stone thee"; fear not, go on boldly, no harm shall come to thee:and take with thee of the elders of Israel; some of them for a witness, as the above writer observes, that they may see that by thine hand water comes out of the rock, and may not say there were fountains there from the days of old.
These were taken, because they were the principal men among the people, who, as they were men of years, so of prudence and probity, and whose veracity might be depended upon; and since so great a multitude could not all of them see the miracle, the rock being smote, and the water only flowing in one part of it, and perhaps the road to it but narrow, it was proper some persons should be singled out as witnesses of it, and who so proper as the elders of the people?