In Exodus, Moses is no doubt writing after the fact. I can only imagine all that was going through his mind while penning (or dictating to others) this great book, not to speak of the adrenaline in his veins in the moment as he faced the Red Sea, though sovereignly equipped given his days growing up in Pharoah's house, the plague scenarios, etc.
Can you also imagine what his 20-30 year old protégé, Joshua was thinking as he watched his 80-some year old hero, clueless about a future day at the Jordan River! Grateful for the spiritual heros in my life, some now passed, Max Shoaf, Woodrow Oxner, Oral Roberts types...few and far between.
"Then Moses stretched out his hand over the sea, and all that night the Lord drove the sea back with a strong east wind and turned it into dry land. The waters were divided, and the Israelites went through the sea on dry ground, with a wall of water on their right and on their left."
Exodus 14:21-22 NIV