We are to go and tell everybody and everything about God and our Savior Jesus Christ. The only question is how we go about it, my personal suggestion is that "you catch more flies with honey". If you want others to know the love of God, you have to allow God's love to come through you.
The same goes with your children. If your desire is that your family grows to love God, they have to see the example of God's love in you.
Ye are the salt of the earth: but if the salt have lost his savour, wherewith shall it be salted? It is thenceforth good for nothing, but to be cast out, and to be trodden under foot of men. Ye are the light of the world. A city that is set on a hill cannot be hid. Neither do men light a candle, and put it under a bushel, but on a candlestick; and it giveth light unto all that are in the house. Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven. Matthew 5:13-16
We as Christians if we are doing what we are supposed to cannot be hidden we are to make the difference. This means that the way we talk, the things we involve ourselves in, EVERYTHING about us points back to who we serve. If we serve God, then the love we show goes back to God.
When the salvation of Christ is within you, you can't help but be a light shining before others.
Train up a child in the way he should go; and when he is old, he will not depart from it. Proverbs 22:6
Our children are to be taught of God and the Bible. If parents instill the love of God into their children when they are young; they are likely to follow the Lord as adults. Just as parents teach their children to be independent by learning how to take care of themselves, children should be taught of God.
Hereby perceive we the love of God, because he laid down his life for us: and we ought to lay down our lives for the brethren.
But whoso hath this world's good, and seeth his brother have need, and shutteth up his bowels of compassion from him, how dwelleth the love of God in him?
My little children, let us not love in word, neither in tongue; but in deed and in truth. 1 John 3:16-18
Simply put, walk the talk. Parents can not expect their children to live godly lives and be obedient, if they themselves do not do the same. As a parent, your authority is God.