Sirach 11:18-28

18 There is that waxeth rich by his wariness and pinching, and this his the portion of his reward:
19 Whereas he saith, I have found rest, and now will eat continually of my goods; and yet he knoweth not what time shall come upon him, and that he must leave those things to others, and die.
20 Be stedfast in thy covenant, and be conversant therein, and wax old in thy work.
21 Marvel not at the works of sinners; but trust in the Lord, and abide in thy labour: for it is an easy thing in the sight of the Lord on the sudden to make a poor man rich.
22 The blessing of the Lord is in the reward of the godly, and suddenly he maketh his blessing flourish.
23 Say not, What profit is there of my service? and what good things shall I have hereafter?
24 Again, say not, I have enough, and possess many things, and what evil shall I have hereafter?
25 In the day of prosperity there is a forgetfulness of affliction: and in the day of affliction there is no more remembrance of prosperity.
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.

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