THE DAILY ISLAMIC REMINDERS. Yaum Ath-thalaatha, 13th day of Safar. (Tuesday, 21st of September 2021). THE CAUSES OF KUFUR. BismilLah.

Blind following
This is one of the worst causes of kufr. The majority of those who disbelieve in ALLAH fall into this category. Some were born into other than the religion of ALLAH. They find their parents and relatives practising this kufr and they follow them without questioning or searching for the truth.
For some, even though they were born Muslims, they attach themselves to others outside of the religion and take on their ways and beliefs. But on the Day of Resurrection, all forms of attachment will be detached except those that were for the sake of ALLAH.

Envy
This also is a cause of disbelief in some people, especially those who have been given Scripture before us.
The envy in their hearts has prevented them from believing in the truth in spite of them knowing it. They wish it would be given to them or that they have more entitlement to it as ALLAH  says in [Quran 2:109]. Religious innovations also causes disbelief by practising without knowledge following others without questioning their sources of the practice.
For all of these mentioned, if someone repents to ALLAH, seeks forgiveness, and returns to ALLAH; HE is willing to accept them and overlook all their shortcomings as ALLAH says in [Quran 8:38].
But, if they don’t repent or seek forgiveness from their Lord until death comes to them, ALLAH has promised them punishment as a reward for what they have done in [Quran 2:90]. May ALLAH keep guiding us all and protect us from any satanic influences. Aameen.