cast out the scorner and strife will cease.
get rid of the leaven.
Sheep go the right and the goats go to the left.
It works EVERY time its tried.
Church, business, government and unrepentant individuals.
Wheat and Chaff... one is for flour for food, whereas the other is only suitable for building fires.
You are misquoting the Bible. The wheat and chaff parable is NOT about purging. It’s about waiting (and seeing how things turn out). Bigger picture-wise, there are times and ways that unity is important; and, conversely, there are times and ways that diversity is important. The Bible speaks to be both, as do the other wisdom literature of mankind.
Since you mention leaven, we have BOTH the feast of the unleavened bread (Passover) AND we have the feast of the leavened bread (Pentacost). The bread of Pentacost is to be a multigrain bread. All of Israel is to come together, each part of which brings the grain of its region, these grains are to be mixed together and leavened.