Sirach 14:12

12 Remember that death will not be long in coming, and that the covenant of the grave is not shewed unto thee.

Sirach 14:12 In-Context

10 A wicked eye envieth bread, and he is a niggard at his table.
11 My son, according to thy ability do good to thyself, and give the Lord his due offering.
12 Remember that death will not be long in coming, and that the covenant of the grave is not shewed unto thee.
13 Do good unto thy friend before thou die, and according to thy ability stretch out thy hand and give to him.
14 Defraud not thyself of the good day, and let not the part of a good desire overpass thee.

The Brenton translation of the Septuagint is in the public domain.