The Kitáb-i-Aqdas

IN THE NAME OF HIM
WHO IS THE SUPREME RULER
OVER ALL THAT HATH BEEN
AND ALL THAT IS TO BE
1The first duty prescribed by God for His servants is the recognition of Him Who is the Dayspring of His Revelation and the Fountain of His laws, Who representeth the Godhead in both the Kingdom of His Cause and the world of creation. Whoso achieveth this duty hath attained unto all good; and whoso is deprived thereof hath gone astray, though he be the author of every righteous deed. It behoveth everyone who reacheth this most sublime station, this summit of transcendent glory, to observe every ordinance of Him Who is the Desire of the world. These twin duties are inseparable. Neither is acceptable without the other. Thus hath it been decreed by Him Who is the Source of Divine inspiration.
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Cross-References
Acceptance of Bahá’í Faith (Cause of God),   K132, K182
Acceptance of good deeds dependent on good-pleasure of God,   K36, K157
Bahá’ís, duties - observance of laws, recognition of Manifestation of God,   16
Bahá’u’lláh represents Godhead,   K86, K132, K143, K172
Laws of God
human Race and,   6, 16, 17-18, K3, K7, K99, K148, K186
observance of,   K2, K17, K45, K71, K97, K134, K138, K147, K171
Recognition of good deeds,   K161
Recognition of Revelation of Bahá’u’lláh enjoined,   16, K134, n155
Study Guide
What are the twin inseparable duties prescribed by God?