12 Bring in to instruction thy heart, And thine ear to sayings of knowledge.
13 Withhold not from a youth chastisement, When thou smitest him with a rod he dieth not.
14 Thou with a rod smitest him, And his soul from Sheol thou deliverest.
15 My son, if thy heart hath been wise, My heart rejoiceth, even mine,
16 And my reins exult when thy lips speak uprightly.
17 Let not thy heart be envious at sinners, But--in the fear of Jehovah all the day.
18 For, is there a posterity? Then thy hope is not cut off.