John Calvin on Joshua 3:11-14

11. Behold the ark of the covenant, etc First he says that the ark of God will go before; and secondly, he explains for what purpose, namely, that Jordan may retire from its place, trembling, so to speak, at the presence of the Lord, as is said in the Psalms. (Psalm 114.) The narrative introduced concerning the twelve men is parenthetical, as it only briefly alludes to what it will afterwards deliver more fully and clearly. At present let us merely understand, that while the ark went before, God displayed his power in guiding the people. And in this way there was a confirmation of the sanctity of the worship appointed by the Law, when the Israelites perceived that it was no empty symbol of his presence that God had deposited with them. For Jordan was compelled to yield obedience to God just as if it had beheld his majesty.

Let us however remember, that the only reason which induced the Lord to display his grace in the ark was because he had placed the tables of his covenant within it. Moreover, as the thing could not be easily credited, Joshua directs the mind of the people to the contemplation of the divine power, which surmounts all difficulties. The title of Ruler of the whole earth here applied to God is not insignificant, but extols his power above all the elements of nature, in order that the Israelites, considering how seas and rivers are subject to his dominion, might have no doubt that the waters, though naturally liquid, would become stable in obedience to his word.

Joshua 3:14-17

14. And it came to pass, when the people removed from their tents, to pass over Jordan, and the priests bearing the ark of the covenant before the people;

14. Et fuit, quum proficiscentur populus ad transeundum Jordanem, sacerdotes qui portabant arcam foederis erant ante populum.

15. And as they that bare the ark were come unto Jordan, and the feet of the priests that bare the ark were dipped in the brim of the water, (for Jordan overflows all his banks all the time of harvest,)

15. Postquam autem venerunt qui portabant arcam usque ad Jordanem, et pedes sacerdotum potantium arcam intincti fuerunt in extremo aquarum (Jordanes autem erat plenus ultra omnes suas ripas toto tempore messis,)

16. That the waters which came down from above stood and rose up upon an heap very far from the city Adam, that is beside Zaretan: and those that came down toward the sea of the plain, even the salt sea, failed, and were cut off: and the people passed over right against Jericho.

16. Constiterunt aquae quae descendebant desuper, et assurexerunt in acervum unum procul valde, ab Adam urbe quae est ad latus Sarthan, et quae descendebant ad mare solitudinis mare salis, consumptae sunt, interciderunt: populus autem transierunt e regione Jericho.

17. And the priests that bare the ark of the covenant of the LORD stood firm on dry ground in the midst of Jordan, and all the Israelites passed over on dry ground, until all the people were passed clean over Jordan.

17. Stabant autem sacerdotes portantes arcam foederis Jehovae in sicco in medio Jordanis expediti, (vel praeparati,) totus vero Israel transibant per siccum donec finem facerent universa gens transeundi Jordanis.