29 When all the congregation saw that Aaron was dead, they wept for Aaron thirty days, even all the house of Israel.
Numbers 20:29 Cross References - WEB
Genesis 1:10
10 God called the dry land “earth”, and the gathering together of the waters he called “seas”. God saw that it was good.
Deuteronomy 34:8
8 The children of Israel wept for Moses in the plains of Moab thirty days, until the days of weeping in the mourning for Moses were ended.
2 Chronicles 35:24-25
24 So his servants took him out of the chariot, and put him in the second chariot that he had, and brought him to Jerusalem; and he died, and was buried in the tombs of his fathers. All Judah and Jerusalem mourned for Josiah.
25 Jeremiah lamented for Josiah, and all the singing men and singing women spoke of Josiah in their lamentations to this day; and they made them an ordinance in Israel. Behold, they are written in the lamentations.
Acts 8:2
2 Devout men buried Stephen and lamented greatly over him.