It appears that for those acquaintances of Paul, a desire to indulge in fleshly desires became more important than serving Jehovah along with Paul.
١١ ،‏ ١٢ لِمَاذَا قَالَ بُولُسُ عَنِ ٱلْبَعْضِ إِنَّ « إِلٰهَهُمْ بَطْنُهُمْ » ؟‏