'Muzzle' in the Bible

"Don't muzzle an ox while it is threshing grain."

I told myself, "I will keep watch over my tongue to keep from sinning. I will muzzle my mouth when the wicked are around."

For in the Law of Moses it is written, "You must not muzzle an ox while it is treading out the grain." God is not only concerned about oxen, is he?

For the Scripture says, "You must not muzzle an ox while it is treading out grain," and, "A worker deserves his pay."