Healthy soil contains organic matter, which is composed of things that have died. The dead matter becomes worm food. As the matter is consumed, nutrients are released that feed other living things like plants. All this to say, decay leads to regeneration.
Jesus compared the human heart to soil. Some hearts are hard and cracked, a feeding ground for birds. Others are rocky and shallow. Others are overrun with thorns. But some hearts are like rich soil where seeds thrive and reproduce.
How do I get a heart that is like good soil? Stuff needs die.
The New Testament says the sons and daughters of God are dead to sin. If the old stuff in me is decaying, then new stuff is being generated.
Interesting note, adding manure to the ground also enriches the soil. Just saying.