Train your child in the way he should go and when he is old he shall not depart from it(Proverbs 22:6).
That’s scriptural. And most parents know it works.
In my day as a youth, every baseball, football, and basketball team had a pennant that we could buy and take home to hang on our walls.
We have introduced the “pennant” into our line of merchandise to remind our kids of what’s important. My wife and I still have some of those antique pennants in our barn. You may want some Jesus, Hellfighter or Satan Sucks pennants for your kid’s room, game room, garage or shop.
Oh heck, why not just put one over your fireplace? I know your wife would really like that!