Sirach 28:8–12

8 Refrain from strife, and you will lessen sins;

for a man given to anger will kindle strife,

9 and a sinful man will disturb friends

and inject enmity among those who are at peace.

10 In proportion to the fuel for the fire, so will be the burning,

and in proportion to the obstinacy of strife will be the burning;

in proportion to the strength of the man will be his anger,

and in proportion to his wealth he will heighten his wrath.

11 A hasty quarrel kindles fire,

and urgent strife sheds blood.

12 If you blow on a spark, it will glow;

if you spit on it, it will be put out;

and both come out of your mouth.