John Gill - Exposition
John Gill
Foolishness [is] bound in the heart of a child,.... That is, sin, the greatest of all folly; this is naturally in the heart of man; it is in the heart of a child, it is in him from his infancy; it is bound in his heart, it is rooted and riveted in him, being conceived in sin, and shapen in iniquity; it is what cleaves close to him, and he has a strong affection for and desire after: the...