As a parent, you have authority because God calls you to be an authority in your child's life. You have the authority to act on behalf of God. As a father or mother, you do not exercise rule over your jurisdiction, but over God's. You act at His command. You discharge a duty that He has given. You may not try to shape the lives of your children as pleases you, but as pleases Him.
On Parental Authority
I've been reading Shepherding a Child's Heart, by Tedd Tripp, and I thought I would share this quote.