More is the pity: ‘Raise up a child in the way that they should go and when they are old they will not depart from it.’
I don’t know what organized religion you follow, but there are lots of people here who think that any religion other than their own is wrong, mistaken, and guilty of its own ‘brainwashing’.
The saying you quote is valid in many areas; but it’s not going to always be true in terms of religious belief.