Proverbs 3:11

3:11 My child, do not despise discipline from the Lord, ¹ 

and do not loathe ²  his rebuke.

Proverbs 3:21

3:21 My child, do not let them ³  escape from your sight;

safeguard sound wisdom and discretion. ⁴ 

[3:11]  ¹ tn Heb “the discipline of the Lord.”

[3:11]  ² tn The verb קוּץ (quts) has a two-fold range of meaning: (1) “to feel a loathing; to abhor” and (2) “to feel a sickening dread” (BDB 880 s.v.). The parallelism with “do not despise” suggests the former nuance here. The common response to suffering is to loathe it; however, the righteous understand that it refines one’s moral character and that it is a means to the blessing.

[3:21]  ³ tn The object of the verb “escape” is either (1) wisdom, knowledge, and understanding in vv. 13-20 or (2) “wisdom and discretion” in the second colon of this verse. Several English versions transpose the terms “wisdom and discretion” from the second colon into the first colon for the sake of clarity and smoothness (e.g., RSV, NRSV, NIV, TEV, CEV).
NIV takes the subject from the second colon and reverses the clauses to clarify that.

[3:21]  ⁴ tn Or: “purpose,” “power of devising.”