If you spill something, especially sweet liquid or something sticky, you have to clean it up, because otherwise the mess will remain and, in the worst case, be spread and create a hygiene problem. A wipe is worth its weight in gold in such a case. If you can moisten it, you can simply wipe over it a few times for smaller amounts and the mess is cleaned up. The spilled substance is then in the cloth and can be carried away and rinsed out under a tap. So the flannel is the tool or carrier medium for the problem. Quite a humble task: to admit that one takes the dirt or the fault of others upon oneself, brings it to purity and then allows it to be washed out and squeezed out. That's how I imagine forgiveness and reconciliation in order to have pure relationships again. Who is this flannel in your life? Or do spills stick to you?
I wish you an extraordinary day!