Numbers 20 29
When the people realized that Aaron had died, they all mourned for him for thirty days.
Compare with other 3 random translations
GW Numbers 20:29The whole community saw that Aaron had died, and all the Israelites mourned for Aaron 30 days.
NAS Numbers 20:29When all the congregation saw that Aaron had died, the whole house of Israel wept for Aaron for thirty days.
KJV Numbers 20:29And when all the congregation saw that Aaron was dead, they mourned for Aaron thirty days, even all the house of Israel.