Allah, in the Qur'an 41:53, says: "We will show them Our signs in the horizons and within themselves until it becomes clear to them that it is the truth. But is it not sufficient concerning your Lord that He is, over all things, a Witness?"
This verse indicates that Allah will show His signs to everyone, both in the natural world and within themselves, until it becomes clear to them that Islam is the truth. However, this does not mean that everyone will necessarily accept Islam or recognize the signs of Allah.
The reason why some people may not recognize or accept the signs of Allah can vary. Some people may be blinded by their own biases or prejudices, while others may be influenced by cultural or societal pressures. Some people may also be exposed to misinformation or lack knowledge of Islam and its teachings.
Ultimately, Allah has given human beings free will and the ability to choose their own beliefs and actions. While He may show signs and guidance to all, it is up to individuals to accept or reject them. It is important for Muslims to continue to spread the message of Islam and to show the beauty of its teachings to others, while also respecting the free will and choices
