Matt 5:22 But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire. The Greek word translated "fool" is moros (G3474), which gives us the word "moron". Now, looking back into the Greek Old Testament (LXX), this Greek word moros usually reflects the Hebrew word nabal (H5036) in the Hebrew Old Testament (Deut 32:6, Isaiah 32:5-6; cf. Jer 5:21). And, nabal usually means "impious, abandoned, wicked" (Gesenius' Lexicon). Now, In Jewish thought there were three classes of people: The unrighteous (who were predestined for hell), the sinners (the average people who needed to come into full compliance with the commandments), and the righteous (or saints), who followed the commandments. Of these groups, only the righteous had their names written in the Book of Life. http://centralcal.com/crist2.htm Thus, it seems that what Jesus is warning against is calling someone nabal, to wit, "impious", "wicked", and "abandoned [by God]". So, those who allege that their brothers are abandoned by God (nabal) are in danger of truly being abandoned by God themselves. As it is written, "For in the way you judge, you will be judged; and by your standard of measure, it will be measured to you" (Matt 7:2). And even, "And He was saying to them, 'Take care what you listen to. By your standard of measure it will be measured to you; and more will be given you besides'" (Mark 4:24). YHWH-God alone has the Authority to deem these matters. James 4:11-12, 5:9 Do not speak against one another, brethren. He who speaks against a brother or judges his brother, speaks against the law and judges the Law; but if you judge the Law, you are not a doer of the law but a judge of it. There is only one Lawgiver and Judge, the One who is able to save and to destroy; but who are you who judge your neighbor? ... Do not complain, brethren, against one another, so that you yourselves may not be judged; behold, the Judge is standing right at the door. Romans 14:4,10,13 Who are you to judge the servant of another? To his own master he stands or falls; and he will stand, for the Lord is able to make him stand... But you, why do you judge your brother? Or you again, why do you regard your brother with contempt? For we will all stand before the judgment seat of God... Therefore let us not judge one another anymore, but rather determine this — not to put an obstacle or a stumbling block in a brother's way. Hebrews 10:30, 12:23 For we know Him who said, " VENGEANCE IS MINE, I WILL REPAY " And again, " THE LORD WILL JUDGE HIS PEOPLE"... to the general assembly and church of the firstborn who are enrolled in heaven, and to God, the Judge of all, and to the spirits of the righteous made perfect, May we all be given the strength, and wit, and wisdom to do Thy Will, our Dear Heavenly Father, and hold back from judging amongst our frail selves. Amen.