[Koblenz]

They usually don't. My grandfather (Mennonite) wasn't certain if he should put lightning rods on his barn, since he didn't want to interfere with God's will if God should decide to strike his barn.

But why was it not against God's will to disturb the field and cut down the trees to make boards to make the barn?

[Richard Kimball]

Read Jeremiah 29:

5": Build ye houses, and dwell in them; and plant gardens, and eat the fruit of them;
"6": Take ye wives, and beget sons and daughters; and take wives for your sons, and give your daughters to husbands, that they may bear sons and daughters; that ye may be increased there, and not diminished.
11": For I know the thoughts that I think toward you, saith the LORD, thoughts of peace, and not of evil, to give you an expected end.
"12": Then shall ye call upon me, and ye shall go and pray unto me, and I will hearken unto you.
"13": And ye shall seek me, and find me, when ye shall search for me with all your heart.