Submission or Islam in the Arabic language is a meaning or a description rather than a name or a title. It describes the state of mind of anyone who recognizes God’s absolute authority, and reaches a conviction that God alone possesses all power; no other entity possesses any power or control independent of Him. The logical consequence of such a realization is to devote one’s life and one’s worship absolutely to God alone. So, Submission (or Islam in Arabic language) is a spiritual state of mind and not a title of a religion that belongs to a specific group of people. ANYONE who submits and worships one God without idolizing other entities is a Submitter by definition (Muslim in Arabic language).
This state of mind basically conforms with God’s one and only message He delivered to man-kind through all of His messengers since Noah; worship God alone, follow God alone and avoid idolatry. Based on that, one can safely conclude that the message of Islam or Submission has been in existence way before the time of prophet Muhammad and way before the Quran. All God’s messengers, since Noah, devoted their lives and worship to God alone and were Submitters to Him alone.
[Final Testament/Quran 21:25] We did not send any messenger before you except with the inspiration: "There is no god except Me; you shall worship Me alone."
[Final Testament/Quran16:36] We have sent a messenger to every community, saying, "You shall worship GOD, and avoid idolatry....."
[Final Testament/Quran 10:71] Recite for them the history of Noah. He said to his people, "O my people, if you find my position and my reminding you of God's revelations too much for you, then I put my trust in God. You should get together with your leaders, agree on a final decision among yourselves, then let me know it without delay.
[Final Testament/Quran 10:72] "If you turn away, then I have not asked you for any wage. My wage comes from God. I have been commanded to be a submitter."
[Final Testament/Quran 2:133] Had you witnessed Jacob on his death bed; he said to his children, "What will you worship after I die?" They said, "We will worship your god; the god of your fathers Abraham, Ismail, and Isaac; the one god. To Him we are submitters."
[Final Testament/Quran 3:52] When Jesus sensed their disbelief, he said, "Who are my supporters towards GOD?" The disciples said, "We are GOD's supporters; we believe in GOD, and bear witness that we are submitters."
With this understanding in mind, and how it has been the only message God delivered through all His messengers, we can easily conclude that Islam or Submission is indeed the only religion that has been delivered, authorized, and approved by God. This is stated clearly in God's Final Testament:
[Final Testament/Quran 3:19] The only religion approved by GOD is "Submission." Ironically, those who have received the scripture are the ones who dispute this fact, despite the knowledge they have received, due to jealousy. For such rejectors of GOD's revelations, GOD is most strict in reckoning.
[Final Testament/Quran 3:85] Anyone who accepts other than Submission as his religion, it will not be accepted from him, and in the Hereafter, he will be with the losers.