Numbers 20:29

And when all the congregation saw that Aaron was dead, his death having taken place on the first day of the fifth month of the fortieth year after the departure from Egypt, Numbers 33:37, when he was one hundred and twenty-three years old, Exodus 7:7, they mourned for Aaron thirty days, even all the house of Israel. All believers have the comforting assurance that their death, though a consequence of sin, takes place according to God's will, the grave being the body's resting-place until the great day of the final resurrection.