29 When the whole congregation saw that Aaron had died, the entire house of Israel mourned for him thirty days.
Numbers 20:29 Cross References - BSB
Genesis 1:10
10 God called the dry land “earth,” and the gathering of waters He called “seas.” And God saw that it was good.
Deuteronomy 34:8
8 The Israelites grieved for Moses in the plains of Moab thirty days, until the time of weeping and mourning for Moses came to an end.
2 Chronicles 35:24-25
24 So his servants took him out of his chariot, put him in his second chariot, and brought him to Jerusalem, where he died. And Josiah was buried in the tomb of his fathers, and all Judah and Jerusalem mourned for him.
25 Then Jeremiah lamented over Josiah, and to this day all the choirs of men and women sing laments over Josiah. They established them as a statute for Israel, and indeed they are written in the Book of Laments.
Acts 8:2
2 God-fearing men buried Stephen and mourned deeply over him.