During the 3 weeks, 9 days, and Tishah B’av we observe different levels of mourning for the 2 Batei Mikdash (Temples) that were destroyed. It was destroyed because the Jewish people were not united and there was hatred between Jews.
Here’s a video from aish.com that you can watch about the importance of brotherly love.
Have a meaningful day,
Meira
I highly recommend watching this video :)
its sooooooooooooo good