The hymn doesn't anywhere refer to people crossing over on dry land.

在赞美诗中并没有提到人们从地面上穿过海洋。

耶鲁公开课 - 旧约导论课程节选

In the material that's usually associated with P Moses is depicted as stretching out his staff, first to divide the waters which stand like a wall so that the Israelites can cross over on dry land; and then he holds out his staff to bring the waters crashing down on the Egyptians.

在经常能和P材料联系起来的材料中,摩西需要满足他的追随者的要求,第一个便是，水像墙一样立在两旁以便于犹太人,可以从中通过，然后为了保住追随者的性命,他用水淹没了埃及士兵。

耶鲁公开课 - 旧约导论课程节选

The ark also comes to rest on a mountaintop, the hero sends out a bird to reconnoiter the land, to find out if it's dry yet.

方舟停在山顶上,英雄派一只鸟出去查看大地的情况。

耶鲁公开课 - 旧约导论课程节选

On day three, land is formed to make dry spots from the waters below.

第三天，土地形成，地下的水流上形成干燥地带。

耶鲁公开课 - 旧约导论课程节选