I think you also need to teach your children about thehistory of your own beliefs, not just the "rules" to observe. With Christianity that would cover the long history of the Jews and their relationship with God, and the way the original simple beliefs and the sensible way of living together taught by Moses had become crusted over with elitism, prohibitions and so on, and the "new start" proposed by Jesus then brought back into focus the importance of inter-personal relationships.
He wanted people to look after one another - "Inasmuch as you do it [give food or clothing] to the least of my brethren, you do it to me" and to regard as a "neighbour" those of another region or belief as well as one's own. The Good Samaritan was a strange concept to those who heard the parable, as Samaritans were considered foreigners to be avoided or cursed, as Jews and Samaritans despised each other.
And when asked, to try to trip him up, which was the most important commandment, he did not pick any one of them, but said "Love thy God, and they neighbour as thyself" - which is the basis for all moral codes, with God left out for some, but the neighbours (all of them) left in.
The problems begin, not with him, but with the layers and layers of bureaucracy and human self-importance and fallibility which crystallised around the institution of the church, and the way the letter of the law becomes more important than the spirit.