He that is surety for a stranger shall smart [for it],.... Or in "breaking shall be broken" , ruined and undone; he engaging or becoming a bondsman for one whose circumstances he knew not; and these being bad bring a load upon him, such an heavy debt as crushes him to pieces.
Mr. Henry observes that our Lord Jesus Christ became a surety for us when we were strangers, and he smarted for it, he was bruised and wounded for our sins; but then he knew our circumstances, and what the consequence would be, and became a surety on purpose to pay the whole debt and set us free; which he was capable of doing: without being broken or becoming a bankrupt himself; for he was not broken, nor did he fail, Isa 42:4.
Jarchi's note is,"the wicked shall be broken, to whose heart idolatry is sweet;''and he that hateth suretyship is sure; or those "that strike" , that is, with the hand, used in suretyship; see Pr 6:1; such an one is safe from coming into trouble by such means.
The Targum is,"and hates those that place their hope in God.'' ewry er "frangendo frangetur", Michaelis; so Pagninus and others.