Still not following what you mean by present stage of spiritual evolution. What do you specifically mean by that if you can explain it.
We have entered a new stage of spiritual evolution because we are living in a new age. It is called the Messianic Age because the Messiah has come. The Messiah was the return of Christ as promised in the Bible.
To be clear, I believe that Jesus was the Messiah, but Jesus did not plan or promise to return to earth after He ascended to heaven.
(John 14:19, John 17:11, John 17:4, John 19:30, John 18:36, John 18:37)
That means that the return of Christ as promised in the Bible had to me another man and Bahai's believe that man was Baha'u'llah.
In the Baháʼí Faith, the "
Messianic Age" refers to a 1000-year period beginning with the Declaration of Baháʼu'lláh in 1863. Baháʼís believe the period of peace and prosperity is gradually unfolding and will culminate in the appearance of "The Most Great Peace".
Messianic Age - Wikipedia
Baha'is believe that Adam was the first Prophet in the Adamic Cycle of religion and that we are living in the Universal Cycle of religion which began with Adam.
41: THE UNIVERSAL CYCLES
The present Universal Cycle of religion includes the Adamic Cycle (Prophetic Cycle) which began with Adam and ended with Muhammad, who was the Seal of the Prophets. The Baha’i Cycle (Cycle of Fulfillment) was ushered in by the coming of the Bab and Baha'u'llah. All Messengers of God that come during this Cycle will be under the shadow of Baha'u'llah. The Baha’i Cycle will last no less than 500,000 years.
“It is evident that every age in which a Manifestation of God hath lived is divinely ordained, and may, in a sense, be characterized as God’s appointed Day. This Day, however, is unique, and is to be distinguished from those that have preceded it. The designation “Seal of the Prophets” fully revealeth its high station. The Prophetic Cycle hath, verily, ended. The Eternal Truth is now come. He hath lifted up the Ensign of Power, and is now shedding upon the world the unclouded splendor of His Revelation.”
Gleanings From the Writings of Bahá’u’lláh, p. 60