﴿ إِلَّا عِبَادَ ٱللَّهِ ٱلْمُخْلَصِينَ ﴾

“EXCEPT for God’s true servants, [most people are apt to go astray.]”

all except God’s sincere servants namely the believers who are saved from chastisement because they were sincere in their worship mukhlisīna; or if one reads mukhlasīna because God has made them sincerely devoted to such worship.