No matter how hard you try to guide them, God does not guide the ones He had committed to straying. Thus, no one can help them.
إِن تَحرِص عَلىٰ هُدىٰهُم فَإِنَّ اللَّهَ لا يَهدى مَن يُضِلُّ وَما لَهُم مِن نٰصِرينَ
in tahris ‘alaa hudaahum fa innal laaha laa yahdee mai yudillu wa maa lahum min naasireen