Proverbs 11:15

He that is surety for a stranger shall smart for it: and he that hateth suretyship is sure.
– Proverbs 11:15

Proverbs consistently warns against striking hands, or becoming a guarantor for another (Proverbs 6:1-5; 17:18). The general truism is that one who becomes surety will have trouble for it. The earlier counsel was to get out of it as soon as possible and here to hate it or avoid it. Keeping from it is way to be sure, or confident and free from trouble.

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