New International Version
And have you completely forgotten this word of encouragement that addresses you as a father addresses his son? It says, "My son, do not make light of the Lord's discipline, and do not lose heart when he rebukes you,

American Standard Version
and ye have forgotten the exhortation which reasoneth with you as with sons, My son, regard not lightly the chastening of the Lord, Nor faint when thou art reproved of him;

Berean Study Bible
And you have forgotten the exhortation that addresses you as sons: “My son, do not take lightly the discipline of the Lord, and do not lose heart when He rebukes you.

Douay-Rheims Bible
And you have forgotten the consolation, which speaketh to you, as unto children, saying: My son, neglect not the discipline of the Lord; neither be thou wearied whilst thou art rebuked by him.

English Revised Version
and ye have forgotten the exhortation, which reasoneth with you as with sons, My son, regard not lightly the chastening of the Lord, Nor faint when thou art reproved of him;

King James Bible
And ye have forgotten the exhortation which speaketh unto you as unto children, My son, despise not thou the chastening of the Lord, nor faint when thou art rebuked of him:

World English Bible
and you have forgotten the exhortation which reasons with you as with children, "My son, don't take lightly the chastening of the Lord, nor faint when you are reproved by him;

Young's Literal Translation
and ye have forgotten the exhortation that doth speak fully with you as with sons, 'My son, be not despising chastening of the Lord, nor be faint, being reproved by Him,

Hebrews 12:5 Additional Translations ...