Is Allah the One Who Created the Sky and the Earth?

The term kufr here refers to ingratitude. When someone is ungrateful, they are also known as a person who has not made or not considered or not acknowledged the gift of someone upon them. And this is why the Quran says, when Musa Alayhi Salaam came up to him and told him, look, we need you to do this and that to send Banu Isra'in. The answer is yes indeed. He knew immediately that this is the Musa.