I don't believe in generational blessings. It's talked about in the Old Testament but not the New Testament.
You can show your children what a real Christian is by their daily observation of how you live. But you can't choose for them. I've seen a lot of Christians with adult children who have no interest in godly living or faith in Jesus Christ.
But Timothy's mother and grandmother played a kind of important role in his life, I believe it can still play out in this our own time.