Introduction

Tawheed (the absolute unique Oneness of God Almighty), the absolute oneness of God Almighty in His Lordship, His right to be worshipped, and His Names and Attributes, is the central message with which every prophet was sent. This is not a uniquely Islamic claim, but a Qur’anic assertion regarding the original mission of all prophets from Adam to Jesus (peace be upon them all).

This chapter demonstrates, through textual evidence, that pure monotheism was the consistent foundation of prophetic teaching, and that deviation from Tawheed (the absolute unique Oneness of God Almighty) occurred later through human alteration, exaggeration, and theological innovation.

The Universal Call to Tawheed

God Almighty explicitly states that every messenger was sent with one message:

Ibn Jarir al-Tabari (God Almighty be merciful to him) explained that this verse establishes Tawheed al-Uluhiyyah (God Almighty’s absolute rights to be worshiped alone) as the defining call of all messengers, without exception.

Tawheed in the Teachings of Adam and Nuh

Although the Bible provides limited detail regarding Adam (peace be upon him), the Qur’an establishes his role as the first prophet who taught mankind obedience to God Almighty alone.

Regarding Noah (peace be upon him), God Almighty states:

This same message is reflected in the Biblical account:

Early Muslim scholars noted that the Biblical narrative preserves the authority of God Almighty over judgment, while later generations introduced intermediaries and saint veneration, which Noah (peace be upon him) himself opposed.

Tawheed in the Message of Abraham

Abraham (peace be upon him) is presented in both the Qur’an and the Bible as a staunch monotheist who rejected idolatry.

The Bible similarly records:

Ibn Kathir (God Almighty be merciful to him) explained that Abraham’s (peace be upon him) rejection of intermediaries forms the foundation of the millah of Tawheed (belief that only God Almighty deserves worship), later perfected in Islam.

The Law of Tawheed Given to Moses

The clearest Biblical declaration of monotheism appears in the Torah:

This declaration aligns precisely with the Qur’anic articulation of Tawheed:

The scholars held that the introduction of anthropomorphic excesses and later theological constructs within Judaic tradition constituted departures from the original teaching of Moses (peace be upon him).

Jesus and the Restoration of Monotheism

The Qur’an records Jesus (peace be upon him), calling his people back to Tawheed:

The Bible records a parallel statement:

Imam Ahmad (God Almighty be merciful to him) held that any attribution of divinity to Jesus (peace be upon him) contradicts his explicit statements and the unanimous understanding of the prophets before him.

The Qur’an as the Final Criterion

The Qur’an affirms Tawheed as the decisive measure by which all beliefs are judged:

The scholars unanimously held that Islam restored the pristine monotheism of the prophets, free from innovation, intermediaries, and theological excess.

Conclusion

From Adam to Jesus (peace be upon them all), the prophetic call was one: exclusive worship of God Almighty alone. The Qur’an does not introduce a new creed, but preserves and completes the original message of Tawheed that was gradually obscured within earlier communities.