"Once Saved Forever Saved"??? Is IVF sin for Singles???

A recent school of thought has generated a rather heated debate for or against the Body of Christ among Christians. "Once Saved Forever Saved!" Is that true or is it "heresy"? Why is this generating so much buzz in Christiandom? What do you think? Please listen to what I have been led to say and then share your views on the matter. This is a two-in-one episode because it also addressed single parenting through IVF. Is it a sin? Is it right or wrong? Why? I said what came to my mind about it and I hope it helps you make decisions pleasing to Jehovah GOD on the matter. I look forward to your feedbacks. Shalom!