John Calvin

“ At the same time, it is not doubtful that by accepting the flower of their tribes, the handle for complaint and quarrel was cut off. For it could not justly have been maintained that not even the aged and worn out, or the young and feeble, were to be spared. Some, perhaps, may be inclined to conjecture that the army was raised not by choice but by lot, though it rather seems to me that all who were most robust and best able to bear fatigue were enrolled. ”

“ But when God displays his power and favor at minute intervals of time all doubt is removed. The moment the feet of the priests were made wet the Jordan retired; now on their departure he recovers his free course, and that at the very instant when they reached the bank. For the term dry here means that part which was not covered by the overflow. [52] Thus the river, though dumb, [53] was the best of heralds, proclaiming with a loud voice that heaven and earth are subject to the God of Israel. ”

“ For the priests which bare, etc If we are ordered to halt while others are hastening, we know how easily a feeling of irksomeness is produced, because we seem to be occupying an inferior position. The priests, therefore, are justly praised for their patience in calmly remaining alone at their post, while the whole people were swiftly hurrying on to the further bank. ”

“ Joshua 4:10-18
10. For the priests which bare the ark stood in the midst of Jordan, until every thing was finished that the LORD commanded Joshua to speak unto the people, according to all that Moses commanded Joshua: and the people hasted and passed over.
10. Sacerdotes autem portantes arcam stabant in medio Jordanis donec compleretur omnis sermo quem praeceperat Jehova ad Josuam, ut diceret populo: prorsus ut praeceperat Moses ipsi Josue: festinavit autem populus transeundo. ”