When a seed falls to the ground and sprouts, it sends out roots. And, like the seed, they are small. But over time those roots can grow. Our Lord Jesus, In Matthew 13, likened the truth of His words to seeds, but He also speaks of the seeds of the evil one and the damage they do.
Let me tell you a story, a true story, and make an analogy.
I noticed a part of our lawn was dying and found one of the heads was barely putting out any water. The head must be bad, I thought, so I purchased a new head and replaced the old. The new head was even worse for the spring was not worn like in the old one. So I dug down to see what was going on. I found no problems where the head tied into the water line. Great, I will have to keep digging. Here is a picture of the first problem I found.
You see how those tiny roots form decades back had grown? Two of these roots had entangled the water line and nearly pinched off the flow of water. One root large pushing the line up from where it had been lain in the past and pressing it into a smaller root that was still strong enough to choke the flow of life giving water. But the story does not end there. I knew I would need to dig all the way back to the next head that was still working and found this:
Two roots in the right place that had grown so large they looked like one with the line crushed.
Fixing the problem required much labor. A lot of time exposing the problem, then even more labor to cut way those roots so a new line could be laid. Those blogs that I follow, these are fellow laborers working to ensure that the water of truth flows freely.