Proverbs 22:6 - Joseph Benson’s Commentary on the Old and New Testaments

Train up Hebrew, חנךְ, initiate, or instruct; a child in the way he should go Or, according to his way, that is, in that course or manner of life which thou wouldest have him to choose and follow. Or, as some render the clause, in the beginning of his way, that is, in his tender years, as soon as he is capable of receiving instruction, the Hebrew על פי דרכו, signifying, literally, in the mouth of his way, and the mouth being often put for the beginning or entrance of a place or thing. And when he is old, he will not depart from it Namely, not easily and ordinarily. The impressions made in his childish years will remain, unless some extraordinary cause occur to erase them. “Instruct a child,” says Bishop Patrick, “as soon as ever he is capable, and season his mind with the principles of virtue before he receive other impressions, and it is most likely they will grow up with him; so that when he is older he will not forsake them, but retain them as long as he lives.”