And Aaron the priest went up into mount Hor at the commandment of the LORD, and died there, in the fortieth year after the children of Israel were come out of the land of Egypt, in the first day of the fifth month.

And it came to pass in the fortieth year, in the eleventh month, on the first day of the month, that Moses spake unto the children of Israel, according unto all that the LORD had given him in commandment unto them;

From the Hebronites: Jerijah was the head of the Hebronites, according to the genealogical records of his ancestors. A search was made in the fortieth year of David’s reign and strong, capable men were found among them at Jazer in Gilead.

And Asa slept with his fathers, and died in the one-and-fortieth year of his reign.

As he was rounding out his fortieth year, it occurred to him to visit his brothers, the descendants of Israel.