The angels come to visit Avraham Avinu, and they ask Avraham Avinu, “Where is Sarah your wife?” And it turns out that Sarah is ba'ohel (in the tent). Our Chachamim (Sages) explained to us that the modesty of Sarah Imeinu is on display because she was ba'ohel when all these men were coming to visit Avraham Avinu.
I want to ask you one question. Do you think for one second that Sarah Imeinu was dressed inappropriately? Do you think Sarah Imeinu didn't have her sheitel (wig) on? Or do you think Sarah Imeinu's knees or elbows weren't covered? Chas veshalom (God forbid). Sarah Imeinu was the paragon of modesty. And yet, there was a question of, “Where is Sarah?” She is ba'ohel.
Many times, when you watch a video like this from Vayimaen, it's focusing on the fact that we need to exercise Shemirat Einayim (guarding the eyes) on the street, at work, on the train, etc. But sometimes we also need to take a look at how we are exercising Shemirat Einayim within the confines of our own home, at our own weddings, brit milahs (circumcision ceremonies), and bar mitzvahs (coming-of-age ceremonies). Even if every single person there is dressed completely appropriately to the height of tzniut (modesty), it still doesn't mean that a person's eyes are allowed to roam wherever they want. In fact, the Gemara tells us that even etzba ketana, even a finger of someone, if it's looked at in the wrong way, is already inappropriate. That doesn't mean that women have to wear gloves, but it means that we need to be sensitive to how powerful the idea of Shemirat Einayim actually is.
I'll end with this one last point. In Masechet Bava Batra, we read about the fact that two neighbors have to make sure there's a wall between their property, because when I look into your backyard or you look into mine, not only is there a worry of Shemirat Einayim, but there's a worry of hezek re'iyah, that I can damage what you have with my sight. Just looking at something, wishing that I had that thing, is enough to perhaps bring damage to that thing. And that's true whether it's their crops. But it's also true about anything else that I could be jealous of. There are people in this world who are in your own family. A sister-in-law, a friend's wife. They're the people that you love. They're people in your extended family. You wouldn't want anything bad to happen to them. And yet we read that there's something called hezek re'iyah. When something is looked at not with the right eye, but with the ayin (eye) of Beracha (blessing), with an ayin tovah (good eye), it already brings the opposite of blessing. We have to be careful not only of the damage that happens to us through our eyes, but also of the damage that we bring to other people when we look in a way that we should not. We have the power of Beracha in these two eyes. Let's make sure always to use it.