Proverbs 14:4 Without oxen a stable stays clean, but you need a strong oxen for a large harvest.
This verse says to me, if we are going to win souls we are gong to get a little dirt slung at us. But we must be strong and get out of our comfort zone a bit. We can't expect to stay all neat and tidy and expect to make a difference.
We can grow strong bits at a time. We can start as as a baby oxen. Then by the time we get big enough for lots of mud... We will be strong enough to handle that mud.