I heard this as an example not to long ago and thought it was super cool! You could even use this as a visual aid on the importance of integrity and actually “walking worthy of the calling to which you were called.” (Ephesians 4:1)
When you go to the grocery store to buy water, you hand the cold unopened bottle to the cashier. He or she will then scan the black and white rectangle. After this, the computer (cash register) will register that this is a specific brand and size of water along with the price of the item. Now imagine that the same bottle was empty. If we then scanned it, the computer would still register the price, brand and size. And once more let’s pretend that the bottle had been refilled with dirty water. Once again when you scan it, you would still see the same specifications on the screen (price, brand, size).
Maybe you already see the point. There are many people walking around today who if you asked, would label themselves a follower of Christ. They would call themselves a Christian. However, if you were able to cut their spiritual hearts open you wouldn’t see the living water that Christ offers, but rather the filth left behind by sin or maybe the emptiness of a life lived for one’s own pursuits and interests rather than a life lived for Christ. The best way to identify the content is not by the bar code.
Jesus offers another way to know the truth of someone’s master, and its not the bar code. Flip over to Matthew 7.
“15 “Watch out for false prophets. They come to you in sheep’s clothing, but inwardly they are ferocious wolves. 16 By their fruit you will recognize them. Do people pick grapes from thornbushes, or figs from thistles? 17 Likewise, every good tree bears good fruit, but a bad tree bears bad fruit. 18 A good tree cannot bear bad fruit, and a bad tree cannot bear good fruit. 19 Every tree that does not bear good fruit is cut down and thrown into the fire. 20 Thus, by their fruit you will recognize them.”, Matthew 7:15-20, NIV
Jesus here is specifically talking about false prophets who come to His children on behalf of satan trying to pull them away from Christ. He tells us to determine their validity by the fruit they are producing. So the question is, what type of fruit are you producing? Or back to our example, what’s in your bottle?
This would be an easy lesson for your kids! Depending on their age, maybe you pour them a glass of water from the good bottle. Maybe you let them collect some dirt from the backyard to put in one of the bottles and explain that our sin is dirty to God and only He can cleanse it from us. There are many directions that this lesson can go. Share it age appropriately!