1 Chronicles 29:28

And thou shalt go to thy fathers in peace; thou shalt be buried in a good old age.

So when David was old and full of days, he made Solomon his son king over Israel.

For David, after he had served his own generation by the will of God, fell on sleep, and was laid unto his fathers, and saw corruption: after...: or, after he had in his own age served the will of God

Thou shalt come to thy grave in a full age, like as a shock of corn cometh in in his season. cometh in: Heb. ascendeth

Then Abraham gave up the ghost, and died in a good old age, an old man, and full of years; and was gathered to his people.

And Isaac gave up the ghost, and died, and was gathered unto his people, being old and full of days: and his sons Esau and Jacob buried him.

The hoary head is a crown of glory, if it be found in the way of righteousness.