The Jewish people have left Egypt proper and are in the desert (Exodus 13:17). When the Jews do not return to Egypt, Pharaoh decides to pursue them and enslave them again. This leads to the famous episode of the splitting of the Sea (Yam Suph Hebrew: יַם-סוּף commonly translated Red Sea).

When the Jewish nation was trapped between the sea and the Egyptian army, the people start complaining and suggesting a return to slavery (14:11-12) and Moses rebukes them and starts praying (14:15). Our sages in the ancient Medrashim reveal the backstory (the Bible is typically written in concise language, with hints that there is more going on than the words reveal. Our sages received on oral tradition of what actually happened from people who were there, and they passed this down through the generations. Many of these traditions were written into the Medrashim). Our sages tell us that at this juncture one man takes spectacular action. A man from the tribe of Judah named Nachshon son of Aminadav.
Nachshon gets up and jumps right into the sea, and only then God begins to open it, saving him. Then the Jewish people enter the splitting sea en masse.

This was a powerful demonstration that Nachshon was not going back into slavery. Some of the people were arguing that it would be better to return to slavery than to drown in the sea. Nachshon showed otherwise, showed the Jewish spirit of self sacrifice and obedience to God (God has just told Moses to order the Jews forward 14:15). His attitude was one of we have nothing left to lose, let’s obey God, even if that means we will die. This is the pride of a free man.
Nachshon was from the tribe of Yehuda, the leaders and future kings of the Jewish nation. He was setting the example of how a free man acts, that it is better to die on your feet than live on your knees. For Jews, it is one example of our core concept that it is better to die a Jew than live otherwise.
For modern men, become aware of what you are willing to die for. Realize that you may never be in the actual position to die for this, so also plan how to live for what you are willing to die for. This is a powerful way for a man to explore his mission in life.
After the miraculous splitting of the sea, the Jews celebrate the Divine salvation with song and dance. Note that the men and women celebrate separately, with Miriam, Moses’ sister, leading the women in dance and song (15:20). To this day, conventional Jews do not allow men and women to sing and dance together. At prayers, men and women do not sit together. At an Orthodox wedding, the men dance with the groom on one side of a divider, while the women dance with the bride on the other side.

Naturally this sounds foreign or backwards to those influenced by modern secular culture, but there is wisdom and power in this. By the Red Sea, the Jewish people have just seen a massive revelation of Divine power in the world which saved them from enslavement or death. They have reason to celebrate and thank God for their freedom and lives. They are ecstatic and their song contains words of Divine prophecy (Ex 15).
You understand, it’s simply not the time to look at girls!* It was a time to focus on God and what He hath wrought upon the mighty Egyptian army, and celebrate freedom and a new dedication to the mission of the Jewish nation. It simply would not have been appropriate to have the girls dancing with the men.
*Conventional Jews in ancient, less promiscuous times actually had a unique holiday featuring single girls dancing in public to facilitate matchmaking, see Talmud Ta’anit 30b–31a.
Now you may say, since these people were so holy and deserved miracles, seeing dancing women and hearing the women sing should not have caused any lust. This is not so. Every healthy man who sees beautiful women should feel at least a spark of desire. That’s how God made us. If you don’t feel something when you see an attractive woman, you need to get your T checked.
The ancient Jews were indeed on a great spiritual level that we cannot even imagine. They still had natural desires and made love to their wives. Both Moses and Miriam were prophets (Miriam was an older sister and had prophecy before Moses was even born), and they knew through Divine wisdom that it would have been damaging to have the men and women together even at this momentous occasion. Likewise when we are praying, we want to focus on God and our personal relationship with the Eternal, not being tempted look at the other gender. This is why conventional Jewish places of prayer have separate seating and some form of a divider between men and women, or the women upstairs on a balcony.
Separate allows equal
As a young child I attended a public school. As a parent there is no way I would let my kids go to a regular public school. There is a tremendous advantage to having your children go to a same gender school.
Boys in an all boys schools perform better, the teachers let them run around like boys should and are more understanding of male nature (because they are not comparing rowdier the boys to more docile girls). Without girls to impress and compete over, boys make deeper friendships with one another and devote more energy to academics, sports, and personal growth. Also, in Jewish schools the boys have a Rebbe, their Rabbi or teacher, for Jewish studies. He is of course, a man, and can relate to the boys on that level. In present day public school that vast majority of teachers are women and lack that empathy with our boys.
At an all girls schools, girls truly get a chance to thrive and find their own ways of self expression. They are taught as girls. They are not wasting time and energy (and their parents’ money) trying to attract boys, or talking about boys, dressing up to compete for boys. When there are projects, plays, presentations, the girls take charge and develop leadership skills instead of waiting for naturally more assertive boys to take lead roles and give them orders. The girls can truly blossom and thrive in this environment.
I have seen all of these things first hand, and no doubt you have too. Boys and girls are different. Science confirms their brains are different. They play, learn, and celebrate differently. Putting them together on the assumption they are identical is simply wrong. This message is straight from the Bible, but is so relevant for today.
In modern mainstream society, there is an assumption that boys and girls are equal and should share the same space and be taught using the same methods. This is called equality but it actually ruins children. What about letting our young people have the freedom to pursue academic and personal development in the best way and without the distraction of the other gender?
Listen, they will grow up, the boys will meet girls and the girls will meet boys. It will happen. There will come a time when boys and girls need to invest ample time and energy into attracting the other sex and forming relationships. Wanting children to rush into that inevitable milieu is misguided and dangerous, it undermines their development.
This is especially true when some interest groups want to “educate” children into accepting abnormal behaviors and identities. You should be extremely suspicious of any agenda or person that wants to expose children to romantic or sexual content. That is child abuse.
They are kids! Let them be kids for a while.