Kufr (disbelief) is the word used in the Qur’an for rejection of faith in God; kuffar (disbelievers) are those who deny the existence of God and thus fail to recognize their existence as knowledge of God is innate to humans; it is as natural as a person’s instinct to eat while experiencing hunger and thirst.

The Qur’an is a manual of life for humanity.  It calls  them to come to their natural state of recognizing God and thus realizing their full potential as humans and thus find peace and tranquility.

It is not different from a loving father calling back his beloved children to him after they have walked away from him in rebellion.

Therefore, all such references are signs of God’s infinite love for humans.

Allah Almighty knows best.