Prov 22:6

“Thus, here also it calls him a new child who was reborn through the washing of regeneration and educated and made childlike, who is made fit for the kingdom of heaven through this process in the same way. The book of Proverbs, therefore, provides training which imparts perception and understanding to the recently born child who is hungry for rational and genuine milk: a perception of present realities but an understanding of future realities. For the child is educated in human matters and given a perception of reality so that he would neither be enslaved to shameful desires nor long for the empty glory of this world. Beyond this, Proverbs confers an understanding of the coming age and encourages faith in the promises by its words.”

“It is a proverb, Train up a child in the way he should go, etc. It is evident that many change from the vices they had as youths in old age, by the gift of the Lord, and conversely, some, by the Lord deserting them, abandon the virtues they seemed to have displayed in their youth. But because much more often each one is accustomed to follow the habits with which he was imbued from youth into the remaining time of his life, he says there is a proverb, because what anyone takes up in youth, he will not change in old age. However, he does not always confirm that it happens this way. Therefore, he posits this kind of proverb to persuade his listeners to pursue virtues from early age, lest perhaps in old age they are unable to learn pursuits which they despised to embrace in tender age. For 'What is once imbued in fresh clay will long preserve its scent,' and Greek history tells that Alexander, the most powerful king, ruler of the world, could not refrain in his manners and conduct from the vices with which he had been infected when he was still a boy by his tutor Leonidas.”