lack of conviction

مُّذَبْذَبِينَ بَيْنَ ذَٰلِكَ لَآ إِلَىٰ هَـٰٓؤُلَآءِ وَلَآ إِلَىٰ هَـٰٓؤُلَآءِ ۚ وَمَن يُضْلِلِ ٱللَّهُ فَلَن تَجِدَ لَهُۥ سَبِيلًا

Wavering between them, [belonging] neither to these [i.e., the believers] nor to those [i.e., the disbelievers]. And whoever Allāh sends astray - never will you find for him a way.

إِنَّمَا يَسْتَـْٔذِنُكَ ٱلَّذِينَ لَا يُؤْمِنُونَ بِٱللَّهِ وَٱلْيَوْمِ ٱلْـَٔاخِرِ وَٱرْتَابَتْ قُلُوبُهُمْ فَهُمْ فِى رَيْبِهِمْ يَتَرَدَّدُونَ

Only those would ask permission of you who do not believe in Allāh and the Last Day and whose hearts have doubted, and they, in their doubt, are hesitating.

وَيَحْلِفُونَ بِٱللَّهِ إِنَّهُمْ لَمِنكُمْ وَمَا هُم مِّنكُمْ وَلَـٰكِنَّهُمْ قَوْمٌ يَفْرَقُونَ

And they swear by Allāh that they are from among you while they are not from among you; but they are a people who are afraid.