It’s a sad day when a Christian finds greater value being Christ- like to a lost soul than to their own brother and sister in Christ. We all are in need of Jesus and might want to put down our stones.
If we aren’t to judge if someone is saved then we ought to not judge who needs the love of Jesus most. Christian or not should not dictate how we treat someone. Withholding the love of Jesus because our brother or sister in Christ hurt us… well, that’s just nasty.