Answer: We all know that everything that begins to exist has a cause. The universe began to exist, so it must have a cause outside itself, which is defined as God. The creator of all things.
The other way to prove the existence of God is by using the argument of design. This argument states that the universe has a very deep and extensive order, and anything that has such order needs a knowledgeable designer. Therefore, the universe also needs a knowledgeable designer and cannot have come into existence by chance.
When we look closely at our own bodies, we see that everything is created for a specific purpose. Even the arch of the human foot is designed for a particular function, and every part of the body has order, precision, and purpose. How could such detailed order and calculation exist without a creator and without being designed for a purpose?
It is clear that the more complex and extensive the order, the more knowledgeable and powerful the designer must be.
The Quran encourages us in many verses to think about the creation of the world to understand God's existence better and to know Him more, which increases our love for Him. For example, it says:
"Reflect on the creation of the heavens and the earth, the alternation of night and day, the ships that sail the seas, the rain that God sends down from the sky to revive the earth after its death, and the animals He has scattered across it. All these are signs of God's existence" (Quran 2:164).
If we use our intellect and open the eyes of our hearts, we will realize God's existence, understand His greatness better, and become grateful for the countless blessings He has given us.