The only Truth

May each of you strive with the other to attain Truth.
Indeed, this will be to him or her a blessed existence.
In this way, O men and women, you will unite with Truth.

Gathas of Avesta, Yasna 53,5+6

And so to such a man will be given the best of all possessions...bliss.
By means of Truth and Your Most Bountiful Spirit grant, O Mazda, enlightenment and the full measure of the Good Mind
so that each may enjoy unlimited bliss all the days of his long life.
Thus, O Ahura, Zarathushtra chooses for himself
the Most Bountiful Spirit which is Yours.
May Truth incarnate through the power of the life-breath.

Gathas of Avesta, Yasna 43,2+16

Through Your Spirit of Benediction and Your Supreme Mind
You will grant Perfection and Immortality to him
whose words and deeds are in harmony with Truth,
with the Sovereignty of Mazda and the Devotion of Ahura.
This unique insight reveals Mazda as the Father of Truth.
You are indeed the Father of this life-enhancing Spirit
who moulded this joyous creation.
O Mazda Ahura, through that Spirit of Benediction
You promise all that is best to the Follower of Truth.
This shall indeed convert the many
who are seekers sustained by Devotion and Truth.

Gathas of Avesta, Yasna 47,1ff

When I held You in my mind's eye then I realised You, O Mazda,
as the First and the Last for all Eternity, as the Father of the Good Mind,
the true Creator of Truth, and Lord over the actions of life.

Gathas of Avesta, Yasna 31,8