﴿ فَٱلَّذِينَ ءَامَنُوا۟ وَعَمِلُوا۟ ٱلصَّٰلِحَٰتِ لَهُم مَّغْفِرَةٌۭ وَرِزْقٌۭ كَرِيمٌۭ ﴾

“And [know that] those who attain to faith and do righteous deeds shall be granted forgiveness of sins and a most excellent sustenance;”

The real matter is that man is going to enter a world where it is only believers and pious people who will have eternal comfort and not those who arrogantly ignore the Truth. The real purpose of the Islamic call is to warn people of this coming Day. The sole duty of the giver of the call is to warn people. All other matters relate to God alone, for it is He alone who is at the helm of affairs.