"Progressive revelation is a core teaching in the Bahá'í Faith that suggests that religious truth is revealed by God progressively and cyclically over time through a series of divine Messengers, and that the teachings are tailored to suit the needs of the time and place of their appearance," according to Wikipedia
"Thus, the Bahá'í teachings recognize the divine origin of several world religions as different stages in the history of one religion, while believing that the revelation of Bahá'u'lláh is the most recent (though not the last ~ that there will never be a last), and therefore the most relevant to modern society.
"This teaching is an interaction of simpler teachings and their implications. The basic concept relates closely to Bahá'í views on God's essential unity, and the nature of prophets, termed Manifestations of God.
"It also ties into Bahá'í views of the purpose and nature of religion, laws, belief, culture and history. Hence revelation is seen as both progressive and continuous, and therefore never ceases."
"Throughout history, God has sent to humanity a series of divine Educators ~ known as Manifestations of God ~ whose teachings have provided the basis for the advancement of civilization," according to the Bahá'í International Community's Website
. "These Manifestations have included Abraham, Krishna, Zoroaster, Moses, Buddha, Jesus, and Muhammad.
"Bahá’u’lláh, the latest of these Messengers, explained that the religions of the world come from the same Source and are in essence successive chapters of one religion from God."
This series of divine Educators is also known as progressive revelation.
"Bahá’ís believe the crucial need facing humanity is to find a unifying vision of the future of society and of the nature and purpose of life. Such a vision unfolds in the writings of Bahá’u’lláh," the BIC's site states.