Belief in God is the foremost essential condition of Ahmadiyya Movement
The Promised Messiah and Imam Mahdi, the Founder of the Ahmadiyya Muslim Community, Hazrat Mirza Ghulam Ahmadas, says:
“Relevant to a proper observance of my teaching, it is essential that one should firmly believe that there is an all-Powerful, all-Sustaining Supreme Being, the Creator of everything, Changeless, Everlasting and Eternal. He does not beget, nor was He begotten. He is Holy, so that there is no need or occasion for Him to go on the Cross, or suffer in any way, or be subject to death. He is such that being far removed, He is still very near; and being very near, He is still very far. Although He is One, and absolutely unique, His manifestations are diverse and multifarious. Whenever there occurs in man a new change, for the changed man He becomes a new God, dealing with him on the basis of a fresh manifestation, the man witnessing a change in God in proportion to the change in himself-not that there occurs any change in God, He being Eternal, Changeless and most Perfect in Himself; but with every change in man for the better, – God also reveals Himself to him in a fresh and clearer manifestation.
With every progressive effort on the part of man God also shows Himself with higher and more powerful manifestation. He displays an extraordinary manifestation of His power and glory only when man shows an extraordinary change in himself-this being the root and the bedrock basis of the marvels and miracles witnessed at the hands of all servants of God.
Belief in this God with these powers, is the foremost essential condition of our Movement. Inculcate this belief in your hearts, giving to its implications and requirements the first and top most priority over all considerations of self, over its comforts and relationships. By means of actions in the field of your daily life, with unflinching courage, show a steadfast loyalty in His way. Others in this world do not give Him preference over material means and the support they hope to get from their friends and relations. But do you give Him the first place, so that in heaven you should come to be reckoned His people.
To show signs of grace is the eternal way of God. But you can partake of this blessing only when there remains no difference and no distance between Him and you; only when all your wishes, hopes and desires merge into His will; only when, at all times, in success or failure, in hope or disappointment, you remain in humble prostration at His door, so that He should do with you what He will. If you act like this, in you would appear that God, Who for a long time has kept His face – concealed from the world.
Is there any among you, then, who would act upon this teaching, seeking only His pleasure, without the slightest sense of dissatisfaction against the way His will works? Even in distress you should put your best foot forward, for this is the secret of your success; and you should strive to the utmost of your power to spread the idea of His singleness and unity all over the earth.” (Kashti-e-Nooh, Ruhani Khazain, Vol. 19, pp. 10-11)