Deuteronomy 6

“And these words which I command you today shall be in your heart.  You shall teach them diligently to your children, and shall talk of them when you sit in your house, when you walk by the way, when you lie down, and when you rise up.  You shall bind them as a sign on your hand, and they shall be as frontlets between your eyes.  You shall write them on the doorposts of your house and on your gates." vv.6-9

Read chapter 6
Diligence in teaching children The Way is important and a lot of work and time as it's to be done frequently, earnestly, discreetly.  But not only should we teach and talk about the Lord and His word with our families but with people in our every day life as these verses describe.  Do you talk about scripture when... 

• you sit in your house?
• you walk outside or around town?
• before you go to bed or fall asleep?
• first thing in the morning?
• basically all day long?

Why does it seem so hard or unnatural or not even cross their minds for Christians to talk about scripture wherever and whenever? 

Writing verses on your hand or forehead can be taken metaphorically today as a place of reminder.

By the Jews this custom was followed; and they regarded it as authorized by the injunction of Moses in this passage. Taking his words literally, they had their tôtâphoth and their mezuzah, the former of which - the phylacteries of the New Testament - were strips of parchment, on which passages of the Law (Exodus 13:2-10, 11-17; Deuteronomy 6:4-10, 13-22) were written, and these, enclosed in a box, were bound on the forehead and left wrist, and worn at prayers by the worshippers; the latter a slip of parchment, on which were written certain passages of Scripture (vers. 4-9; Deuteronomy 11:13-21), and which, enclosed in a reed or cylinder, was fixed on the right-hand doorpost of every room in the house 

Think of creative ways that you can talk about scripture whether it be where you have scripture written in your house or why you have a verse written on a piece of paper in your pocket.