"Allah knows everything" refers to the Islamic belief that God, or Allah, possesses complete and absolute knowledge of all things past, present, and future. This concept is fundamental in Islam and reflects the omnipotence and omniscience of Allah. It encompasses not only knowledge of physical realities but also of intentions, thoughts, and emotions of every individual. This belief underscores the idea that Allah's knowledge is limitless and beyond human comprehension, serving as a source of comfort, guidance, and awe for believers.