Sirach 11:28

28 Judge none blessed before his death: for a man shall be known in his children.

Sirach 11:28 In-Context

26 For it is an easy thing unto the Lord in the day of death to reward a man according to his ways.
27 The affliction of an hour maketh a man forget pleasure: and in his end his deeds shall be discovered.
28 Judge none blessed before his death: for a man shall be known in his children.
29 Bring not every man into thine house: for the deceitful man hath many trains.
30 Like as a partridge taken in a cage, so is the heart of the proud; and like as a spy, watcheth he for thy fall:

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