Ben Sira 28:12

12 If you blow on a spark, it will glow; if you spit on it, it will be put out; yet both come out of your mouth.

Ben Sira 28:12 In-Context

10 In proportion to the fuel, so will the fire burn, and in proportion to the obstinacy, so will strife increase; in proportion to a person's strength will be his anger, and in proportion to his wealth he will increase his wrath.
11 A hasty quarrel kindles a fire, and a hasty dispute sheds blood.
12 If you blow on a spark, it will glow; if you spit on it, it will be put out; yet both come out of your mouth.
13 Curse the gossips and the double-tongued, for they destroy the peace of many.
14 Slander has shaken many, and scattered them from nation to nation; it has destroyed strong cities, and overturned the houses of the great.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.