Jesus said, "To this end was I born, and for this came I into the world, to bear witness unto the truth. Everyone that is of the truth hears My voice. Pilate then said unto him, What is truth?" (John 18:37-38)
The first Truth and the foundation of all Truth is God - "God is the Truth (the Real)" (Qur'an 22:6). His right over His creation is above all other rights.
And He has created in accordance with His nature "We created not the heavens and the earth and what is between them but through the Truth (the Real - Haqq); and the hour will most surely come, so turn away (from the ignorant and heedless) with kindly forgiveness." (Qur'an 15:85)
And He has placed within each creature's essence a truth and a nature that can connect it with other truths. "Our Lord is He who gave each thing its creation, then guided it...." (Qur'an 20:50)
Through this nature, the Truth can connect with Truth - "Everyone that is of the truth hears My voice." (John 18:37)
By this connection and attraction, He (God) makes possible the connection between the ones who bring the Truth (the Prophets) and the ones who accept the Truth - "And he who brings the truth and (he who) accepts it as the truth...." (Qur'an 39:33) Those whose hearts are on the paths of the prophets, whose beings have a resonant identity with them, whose spirits are seeking congruence with theirs - they are the ones who accept the Truth.
And He sends Truth in the form of revelation, as guidance - "And with truth have We revealed it, and with truth did it come...." (Qur'an 17:105). This is why there is the potential for revelation to enact an alchemical transformation in the one who approaches its Truth with their own intelligent and honest sincerity.
And the Truth overturns falsehood, revealing falsehood's self-seeking and ephemeral nature - "We cast the truth against the falsehood so that it demolishes it, and lo! it vanishes away...." (Qur'an 21:18)