That link explains it well. It’s a common situation where the person is throwing the ‘Do not judge’ line in front of the bus as a giant speed bump to deflect the conversation. They say ‘do not judge’ but what they really mean is ‘I’m not going to the doctor’. If you’ve explained it once and then explained it twice and you’re not getting anywhere, then heed the teaching of Christ and Paul and shake the dust off your feet and let it go. Their soul currently isn’t in a position to move and you’ll end up exasperating both them and yourself. As Christ informs us, the event will either be a seed that will move them at a later date, or it will be presented at Judgement as a testimony against them. We plant and water, but God makes things grow.
