KJV 1 Corinthians 10 : 2
And were all baptized unto Moses in the cloud and in the sea;
The children of Israel crossed two water points a sea and a river on their way to Canaan.There were more or less similar conditions for both crossings the waters are said to have formed walls and they crossed on dry ground.
KJV Exodus 14 : 21 - 22
And Moses stretched out his hand over the sea; and the LORD caused the sea to go back by a strong east wind all that night, and made the sea dry land, and the waters were divided. 22 And the children of Israel went into the midst of the sea upon the dry ground: and the waters were a wall unto them on their right hand, and on their left.
KJV Joshua 3 : 16 - 17
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. 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.
The apostle refers to the sea (Red) as their place of baptism not the Jordan River
Was there something symbolic about the sea or the events that took place there that led the apostle to refer to the sea over the river?