Rates are weeds that resemble wheat.
"The kingdom of heaven is like a man who sowed good seed on his field; but while men slept, his enemy came and sowed tares among the wheat and went his way. But when the grain had sprouted and produced a crop, then far as also appeared." Matt. 13:24-26
Sometimes when you try to remove the tares, pull them out, wheat gets pulled out or damaged as well. So you just leave them and let them grow together.
When harvest comes, the Lord's angels will separate the wheat from the tares, gather the tares and burn them up.
If you ask me, sometimes it's hard to tell with people who attend church, they blend in, act all super-spiritual shut big smiles, put in a mask. But during the week, we don't see them or know them. If you get know them , the fruit they produce, then you might think, this is not a true Christian. Still we don't know their hearts. God could be working with them and years later enlighten them. We can't be quick to judge. Rarely did my Pastor of a mega church (3000) throw people out and ban them from returning without offering counsel and a chance to get through to the individual, unless they were obviously a threat, evil, but I witnessed a few.