CONCEPT OF GOD IN ZOROASTRIANISM

God in Zoroastrianism is known as ‘Ahura Mazda’. ‘Ahura’ means ‘the Lord’ or 'The Master' and ‘Mazda’ means ‘the Wise’; hence ‘Ahura Mazda’ means ‘the Wise Lord’ or ‘the Wise God’.

Ahura Mazda stands for God, in a strictly monotheistic sense.
Qualities of God according to the Dasatir:
According to the Dasatir, Ahura Mazda has the following qualities:

He is One.
He is without an origin or end.
He has no father or mother, wife or son.
He is without a body or form.
Nothing resembles Him.
Neither the eye can behold Him, nor the power of thinking can conceive him.
He is above all that you can imagine.
He is nearer to you than your own self.

Qualities of God according to Avesta According to the Avesta, the Gathas and the Yasna give various characteristics to Ahura Mazda such as:

Creator
Yasna 31:7 & 11
Yasna 44:7
Yasna 50:11
Yasna 51:7

Most Mighty the Greatest
Yasna 33:11
Yasna 45:6

Beneficent Hudai.
Yasna 33:11
Yasna 48:3

Bountiful Spenta;
Yasna 43:4,5,7,9,11,13,15
Yasna 44:2
Yasna 45:5
Yasna 46:9
Yasna 48:3

Thus, in Zoroastrianism too, we find a concept of an eternal, omnipotent God. Several verses of Yasna praise the Lord as a Bountiful Creator.