From a recent discussion, here, about how ISIS seeks to immanentize the eschaton:
'Unless you have some knowledge of medieval Islamic theology you probably have no idea what irja means. The word translates literally as “postponing.” It was a theological principle put forward by some Muslim scholars during the very first century of Islam. At the time, the Muslim world was going through a major civil war, as proto-Sunnis and proto-Shiites fought for power, and a third group called Khawarij (dissenters) were excommunicating and slaughtering both sides. In the face of this bloody chaos, the proponents of irja said that the burning question of who is a true Muslim should be “postponed” until the afterlife. Even a Muslim who abandoned all religious practice and committed many sins, they reasoned, could not be denounced as an “apostate.” Faith was a matter of the heart, something only God — not other human beings — could evaluate.
'The scholars who put this forward became known as “murjia,” the upholders of irja, or, simply, “postponers.” The theology that they outlined could have been the basis for a tolerant, noncoercive, pluralistic Islam — an Islamic liberalism. Unfortunately, they did not have enough influence on the Muslim world. The school of thought disappeared quickly, only to go down in Sunni orthodoxy’s memory as one of the early “heretical sects.” ...
'In fact, there are hundreds of millions of Muslims around the world who are also engaged in irja, even if they are unfamiliar with the term. Some of them are focused on the Quran, instead of the medieval Shariah, and hold on to the famous Quranic verse that says, “There is no compulsion in religion.”'
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Therefore do not pronounce judgment before the time, before the Lord comes, who will bring to light the things now hidden in darkness and will disclose the purposes of the heart. Then every man will receive his commendation from God.
-- 1 Corinthians 4:5
Each one must do as he has made up his mind, not reluctantly or under compulsion, for God loves a cheerful giver.
-- 2 Corinthians 9:7
