Concerning the great simcha that took place in the בית המקדש by שמחת בית השואבה during the week of Sukkos, the Mishnah says in Maseches Sukkah that מי שלא ראה שמחת בית השואבה לא ראה שמחה מימיו. Anybody who didn't see the great joy of שמחת בית השואבה never saw simcha, which means it was the top, top simcha what one could imagine. And then the Mishnah continues to describe what it was. And the Mishnah says there were great menorot on top of big poles, very, very high up in the עזרה of the בית המקדש, and on top of these poles there were big, big empty empty vessels, and there were ladders, tall ladders by these poles, and the young kohanim would climb these poles holding jugs of oil, very much oil, very heavy, of a hundred and twenty לוג, and they would pour it into those empty vessels on top of these menorot, and then they would have the wicks that they made from different old clothes of the kohanim, and they would light it. And the light was so strong that there was not one yard in the whole Yerushalayim that didn't get light through these lights. And then the Gemara explains that the strength of the young kohanim that did this is stronger than the kohen gadol. The kohen gadol was had to shlepp heavy things, especially on Yom Kippur, but it wasn't as heavy as what these young kohanim did, and also when he went up the מזבח on the כבש, on the ramp was also very slanty, very steep, but the ladders that these young kohanim went up is much steeper, and it was much harder, and nevertheless they did it and lit up the בית המקדש and all around them in Yerushalayim it lit up.

And then the Mishnah continues and says, חסידים ואנשי מעשה היו מרקדים, the חסידים ואנשי מעשה, which a title for special great people, tzadikim, etc., would dance and they would say דברי שירות ותשבחות, praise to Hashem. It seems from the Mishnah that it goes in an order, and after they saw what the kohanim, the young kohanim did, that's when they decided to sing praise to Hashem, which means the real praise to Hashem that they gave was for the fact that they saw what the youngsters are able to do. So when they saw that the youngsters, the young kohanim, are able to work hard in order to bring light, that brought out within them that they should sing שירות ותשבחות, praise to Hashem. And that is a lesson for all of us: the greatest praise we could give to Hashem is when we see the young people, the next generation, how they're behaving. If we see they're behaving in a way that brings light, that is the best reason for a yid to praise Hashem. But we have to remember it doesn't happen by itself. The youngsters don't grow up that way just on their own. It's the job of the elders of the previous generation to teach and raise the children, the youngsters that way. And if you do that, you will see the success and you will be able to praise Hashem for the great job that they're doing in lighting up the world.

So here, besides all the other things that we see in Simchat Beit Hasho'eivah, that it says that they drew the water, and the Yerushalmi says it doesn't only mean they drew water, you were able to draw Ruach haKodesh at the time of participating in Simchat Beit Hasho'eivah. It says Yonah haNavi got his nevuah from Simchat Beit Hasho'eivah, but this is another point we see from here, that it stresses the importance of being mechanech the young generation, and when you're mechanech them properly, you will have the real nachat and you will be able to sing שירה ותשבחות to the Oibershter.