I wrote this for a Father's day contest at my Church.
Psalm 127 is possibly the greatest passage about family in the Bible. It cuts right to the heart of a successful life, and a successful family. "Unless the Lord builds the house, those who build it labor in vain." Which is to say that if God is building the house, those who build it need only calmly continue to work and God will make progress happen.
In Japan the way they teach children to play the violin at age 5 is to teach the mother violin in front of them starting at age 3. On page 29 of Men of Integrity July/August 2016 There is a devotional about praying with your family as a way of modeling Godly behavior and establishing His authority over your household. I feel that the author didn't use the best verses he could have, and falls short of explaining how powerful modeling really is (I know these are really excerpts from books and not originally written as standalone devotions).
Modeling is so powerful it could be successfully used as your only parenting strategy. Deuteronomy 6:9 speaks of God's commandments, "You shall teach them diligently to your children, and shall talk of them when you sit in your house, and when you walk by the way, and when you lie down, and when you rise." Teach with your life, all day every day. This is so important that God repeats himself in 11:19. When you sit, when you walk, when you lay down, and when you rise. Teach by living.
I learned the heart of modeling in my first year of marriage while my wife was pregnant with our firstborn son. I'll start by describing what my dad was like when I was ages 5-7. He had a beard, long hair, wore a bandanna to hold his hair back while he worked, he worked third shift, and had a wretched short temper. I was married in the Spring of '08. By that summer I had grown a pony tail, grown out my beard, was working third shift at a factory, started wearing bandanna's to hold my hair out of my face and struggling with a lifelong short temper. I stopped one day and realized how effortlessly and unintentionally I became my father. It dawned on me that the man I am, is the man my son will most easily become. The man my daughters will be drawn to, for better or worse.
I could use this, learn to overcome my temper so I could help my son overcome his. The easiest and the hardest way to parent is this: Be the man you want your son to be, be the man you want your daughter to marry. God will work everything else out.