What is the Conclusive Proof of The Unity of God?

The Promised Messiah^as & Imam Mahdi (Guided One)
Founder of
THE REVIEW OF RELIGIONS
Hazrat Mirza Ghulam Ahmad^as

Whatever comes into being by the exercise of God’s perfect power, whether it is a part of creation, or it is a Holy Book literally revealed by Him, it is necessary that it should possess the quality that no one out of creation should have the power to produce its like. This is proved in two ways; one is by way of deduction. God is One and without associate in His Being, attributes and works, and this does not admit of any partnership with Him in any of His creations, words or actions. If such partnership were permissible in respect of any of His creations, words or actions, then it would be permissible in all His attributes and actions, and as such it would be permissible that there should be another God. That which possesses all Divine attributes would be God and that which possesses some of the attributes of the Divine, would be a partner of God in respect of those attributes, and this is contrary to reason. It follows that it is necessary that God should be One without associate in all His attributes and words and actions, and His Being should be free from all those inconsistencies which would lead to someone being His partner.
Secondly, it is proved by observation of all those things which have been created by God that none of them could be created by man, not even the least of them like a fly, a mosquito or a spider. On observing their shape and formation, one sees such wonders that furnish conclusive proof of the existence of the Creator of the universe. Besides all these arguments, it is clear to every wise person that were it permissible that someone other than God could have the power to create that which God has created by His power, then no part of creation could be cited as proof of the existence of the True Creator and the matter of His recognition as the Creator would become doubtful; for if some of those things that have been created by God Almighty could be created by someone else, then there is no reason why someone else cannot create everything that God has created.

Now that it is established that it is necessary that that which God has created should be matchless and its matchlessness is conclusive proof of its being from God, this is a complete refutation of the proposition that it is not necessary that the Divine word should be matchless, or that its being matchless is no proof of its being from God…matchlessness is a speciality of the work and word of God. Every wise person knows that the principal means that reason has for establishing the Godhead of the Divine is that everything that proceeds from God is so matchless that it is conclusive proof of the Unity of the Creator. Had this means not been available, the way of reason reaching God would have been closed. ¹

Endnotes
1. Hazrat Mirza Ghulam Ahmad^as, The Essence of Islam, vol. 1 (Tilford, Surrey: Islam International Publications, 1993), 359-361.