15:8), the Jordan's waters, temporarily obstructed from their flow above, solidified into a thick mass. Similar to how the Red Sea’s waters formed walls for the Israelites' passage, the Jordan’s waters formed a barrier over its riverbed that allowed the Israelites to cross safely. The waters which had once flowed into the Jordan now poured into the Dead Sea, identified here as the Arabian Sea, referencing its names in the Greek and Hebrew texts. This body of water was situated in a plain that existed before the devastation of Sodom and Gomorrah and is known for its high salinity, making the water taste quite unpleasant.
This divine act was facilitated through the ark of the covenant, akin to the miracle performed by Moses at the Red Sea, where the ground was supernaturally revealed for the Israelites to cross. The ark represented the presence of the Lord, and during this event, His omnipotent authority over the waters was clearly manifested. At the time, the Jordan presented a formidable barrier, particularly as it was swollen during the wheat harvest season. The sacred writer provides this detail to highlight the miracle’s grandeur. This occurred just before the Passover festival, in the first month of spring (Num. 4:19). At typical times, the Jordan's water levels were low enough for wading across, as David did when escaping Absalom, crossing at a ford (2 Samuel 19:15). However, during this springtime, nearing Passover, the Jordan was at its peak height due to a combination of seasonal rains and the melting snows from Mount Hermon, which feeds into the river. As a result, the river overflowed its banks, inundating the neighboring Jordan valley's lush land and reaching the elevated sandy area nearby, just as it does during the wheat harvest, when the grain is ripe and ready for gathering. This was particularly evident in the spring’s first month, as the offering of the first grains was required at the sanctuary on the second day of Passover (Lev. 23:9, etc.).
Given the overflowing condition of the Jordan, crossing by conventional means would have been impossible for the masses, including families and livestock. Although a few spies managed to swim across (Num. 2:1, 23), that feat was an exceptional act, and the entire populace could not have traversed the river in such a manner.