Josh 4:19

“And when do they come to the crossing of the Jordan? For I have noted that this also has been indicated, so that even the time might be distinguished, and with good reason. "On the tenth," it says, "of the first month." That is also the day on which the mystery of the lamb was prefigured in Egypt. On the tenth of the first month, these things were celebrated in Egypt; on the tenth of the first month, they go into the land of promise. This seems to me exceedingly fortunate, that on the very same day in which someone has escaped the errors of the world, that person may also be worthy to enter the land of promise, that is, on this day in which we live in this age. For all our present life is designated as one day. Therefore we are instructed through that mystery not to put off our acts and works of righteousness until tomorrow but rather "today"6—that is, while we are living, while we are lingering in this world—to make haste to accomplish all things that pertain to perfection, so that on the tenth day of the first month, we shall be able to enter the land of promise, that is, the blessedness of perfection.”

“the people came up out of Jordan on the tenth day of the first month--that is, the month Nisan, four days before the passover, and the very day when the paschal lamb required to be set apart, the providence of God having arranged that the entrance into the promised land should be at the feast. and encamped in Gilgal--The name is here given by anticipation (see on Jos 5:9). It was a tract of land, according to JOSEPHUS, fifty stadia (six and one-half miles) from Jordan, and ten stadia (one and one-fourth miles) from Jericho, at the eastern outskirts of the palm forest, now supposed to be the spot occupied by the village Riha.”

“The crossing took place on the tenth day of the first month, that is to say, on the same day on which, forty years before, Israel had begun to prepare for going out of Egypt by setting apart the paschal lamb (Exo 12:3). After crossing the river, the people encamped at Gilgal, on the eastern border of the territory of Jericho. The place of encampment is called Gilgal proleptically in Jos 4:19 and Jos 4:20 (see at Jos 5:9).”