Sirach 16:12LXX

10He had not pity on them, destroying the whole nation that extolled themselves in their sins.

11So did he with the six hundred thousand footmen, who were gathered together in the hardness of their heart: and if one had been stiffnecked, it is a wonder if he had escaped unpunished:

12For mercy and wrath are with him. He is mighty to forgive, and to pour out indignation:

13According as his mercy is, so his correction judgeth a man according to his works.

14The sinner shall not escape in his rapines, and the patience of him that sheweth mercy shall not be put off.