﴿ قَالَ رَبُّ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ وَمَا بَيْنَهُمَآ ۖ إِن كُنتُم مُّوقِنِينَ ﴾

“[Moses] answered: “[He is] the Sustainer of the heavens and the earth and all that is between them: if you would but [allow yourselves to] be convinced!””

He said ‘The Lord of the heavens and the earth and all that is between them in other words the Creator of all that — should you have conviction’ that He exalted be He is their Creator then believe in Him alone.