The first month, to wit, of Nisan, which wanted but five days of forty years from the time of their coming out of Egypt, which was on the fifteenth day of this month; so punctual is God in the performing of his word, whether promised or threatened. And this day was very seasonable for the taking up of the lambs, which were to be used four days after, according to the law, Exodus 12:3,6. Gilgal; a place so called hereafter upon a following occasion, Joshua 5:9. So here it is an anticipation.
Related Commentaries of Joshua 4:19
Joshua 4:19
19 And the people came up out of Jordan on the tenth day of the first month, and encamped in Gilgal, in the east border of Jericho.