"So, because you are lukewarm—neither hot nor cold—I am about to spit you out of my mouth." -Revelation 3:16
"Salt is good, but if it loses its saltiness, how can it be made salty again? It is fit neither for the soil nor for the manure pile; it is thrown out.
"He who has ears to hear, let him hear." -Luke 14:34-35
"Or do you show contempt for the riches of his kindness, tolerance and patience, not realizing that God's kindness leads you toward repentance?" -Romans 2:4
Francis was not saying that the blood of Christ is not able to clean the vilest of sinners. He is saying many of us have never allowed it to. Do we serve leftovers to a holy God? What do you want to do now? What would our lives look like if we were in love with our heavenly Father? Much different.
They must look much different.