The Prophet (ﷺ) said "Islam began as something strange and it will revert to how it began as something strange. So glad tidings of Paradise to the strangers" The people asked, "Who are they, O' Messenger of Allaah?" He answered, "Those who are pious and righteous when the people have become evil." (Ahmad, ibn Hibban and others, sahih due to supporting evidences, see Badr al-Badr's footnotes to Abu Bakr al-Ajari, Kitaab al-Ghurabaa (Kuwait: Dar al-Khulata li-Kitaab al-Islaami, 1983) pp.16-18).