Obedience

For man's knowledge of God cannot develop fully and adequately save by observing whatsoever hath been ordained by Him and is set forth in His heavenly Book.

Bahá’u’lláh, Tablets of Bahá’u’lláh, p. 267

He hath rained upon men the showers of His manifold and Divinely-inspired knowledge; yet, behold how this generation hath rejected His authority, and rebelled against Him! . . . God grant that, with a penetrating vision and radiant heart, thou mayest observe the things that have come to pass and are now happening, and, pondering them in thine heart, mayest recognize that which most men have, in this Day, failed to perceive. Please God, He may enable thee to inhale the sweet fragrance of His Day, to partake of the limitless effusions of His grace, to quaff thy fill, through His gracious favor, from the most great Ocean that surgeth in this Day in the name of the Ancient King, and to remain firm and immovable as the mountain in His Cause.

Bahá’u’lláh, Gleanings from the Writings of Bahá’u’lláh, p. 58-59

He invited the people of the earth to the light of righteousness. The more passionately He exhorted them, the fiercer waxed the envy and waywardness of the people, except those who wholly detached themselves from all save God, and ascended on the wings of certainty to the station which God hath exalted beyond the comprehension of men. It is well known what a host of enemies besieged Him, until at last the fires of envy and rebellion were kindled against Him.   And after the episode of the fire came to pass, He, the lamp of God amongst men, was, as recorded in all books and chronicles, expelled from His city.

Bahá’u’lláh, The Ki tab-i-Ian, p. 10

He that is careless of what hath poured out from the finger of the Will of God liveth in manifest error.

Bahá’u’lláh, Gleanings from the Writings of Bahá’u’lláh, p. 203

He, verily, will pay the doer of good, whether man or woman, his due recompense, wert thou to follow  what hath been sent unto thee by Him Who is the All-Knowing, the All-Informed. As to him who turneth aside, and swelleth with pride, after that the clear tokens have come unto him, from the Revealer of signs, his work shall God bring to naught. He, in truth, hath power over all things.

Bahá’u’lláh, Epistle to the Son of the Wolf, p. 60

Hold ye fast unto His statutes and commandments, and be not of those who, following their idle fancies and vain imaginings, have clung to the standards fixed by their own selves, and cast behind their backs the standards laid down by God.

Bahá’u’lláh, The Kitáb-i-Aqdas, p. 25