What “oppression” is greater than ..

What “oppression” is greater than that which hath been recounted? What “oppression” is more grievous than that a soul seeking the truth, and wishing to attain unto the knowledge of God, should know not where to go for it and from whom to seek it? For opinions have sorely differed, and the ways unto the attainment of God have multiplied. This “oppression” is the essential feature of every Revelation. Unless it cometh to pass, the Sun of Truth will not be made manifest. For the break of the morn of divine guidance must needs follow the darkness of the night of error. For this reason, in all chronicles and traditions reference hath been made unto these things, namely that iniquity shall cover the surface of the earth and darkness shall envelop mankind. As the traditions referred to are well known, and as the purpose of this servant is to be brief, He will refrain from quoting the text of these traditions."

Bahá'u'lláh, The Kitáb-i-Íqán P. 31