Dvar Torah for Sunday.
Pharaoh had been told that they would leave on a three day journey. After darkness, he was willing to send them, if they left collateral. Since they would not do so, he was convinced that they were planning to flee. As such, Pharaoh gave his final offer and would do no more under any circumstances. This is why Pharaoh said that Moshe could no longer see him, and that if he did, he would die. Pharaoh was clearly ready to fight to the death and not let them go as they pleased.
The question then is: why did he let them go after the next plague?
Why was this lesson different than the lesson by arov, where HaShem said that He would separate between the Yidden and Egypt?
I hope you enjoyed this.