An individual must center his whole heart and mind on service to the Cause, in accordance with the high standards set by Bahá’u’lláh. When this is done, the Hosts of the Supreme Concourse will come to the assistance of the individual, and every difficulty and trial will gradually be overcome.
(Shoghi Effendi, Living the Life, p. 20)
Consider thou the lives of the former sanctified souls; what tests have they not withstood and what persecutions have they not beheld; while they were surrounded with calamities they increased their firmness and while they were overwhelmed with tests they manifested more zeal and courage. Be thou also like unto them.
(‘Abdu’l-Bahá, Tablets of ‘Abdu’l-Bahá v2, p. 302)
Do ye not look upon the beginning of the affairs; attach your hearts to the ends and results. The present period is like unto the sowing time. Undoubtedly it is impregnated with perils and difficulties, but in the future many a harvest shall be gathered and benefits and results will become apparent. When one considers the issue and the end, exhaustless joy and happiness will dawn.
(‘Abdu’l-Bahá, Tablets of ‘Abdu’l-Bahá v2, p. 265)
I ask God to grant thee by His favor and grace that which is thy utmost desire; that the closed doors become opened, the uneven roads become even, thy face shine by the love of God, thy sight become brighter by witnessing the signs of God; that thou mayest attain spiritual joy, eternal happiness and heavenly life.
(‘Abdu’l-Bahá, Tablets of ‘Abdu’l-Bahá v1, p. 129-130)
Many of those who drift away from the Cause do so for the reason that they had ceased to go on developing. They became complacent, or indifferent, and consequently ceased to draw the spiritual strength and vitality from the Cause which they should have.
(Shoghi Effendi, Lights of Guidance, p. 113)
Prayers and supplications should be offered at the sacred Threshold, so that thou mayest remain firm in tests, and patient in ordeals.
(‘Abdu’l-Bahá, Divine Art of Living, p. 85)
Should one who is in affliction or grief read this Tablet with absolute sincerity, God will dispel his sadness, solve his difficulties and remove his afflictions.
(Bahá’u’lláh, Tablet of Ahmad, Bahá’í Prayers, p. 211)
Sometimes, of course, people fail because of a test they just do not meet (Shoghi Effendi, Lights of Guidance, p. 113)
...The souls who bear the tests of God become the manifestations of great bounties: for the divine trials cause some souls to become entirely lifeless, while they cause the holy souls to ascent to the highest degree of love and solidity.
(The Universal House of Justice, 1985 Dec 02, Child Abuse, Psychology and Knowledge of Self)
Verily I ask God to protect thee from the waves of tests and storms of trial until thou becomest firm in the Cause of thy Lord—a firmness whereby thou be enabled to withstand all nations and peoples. When thou art thus confirmed by God, with firmness and solidity in His Covenant among the people, thou wilt see the hosts of the Kingdom shelter thee from all sides with banners whereunto all heads bow.
(‘Abdu’l-Bahá, Tablets of ‘Abdu’l-Bahá v2, p. 267)
Which of my tribulations am I to recount before Thy face, O my Lord? Am I to recite before Thee what in days of old befell me at the hands of the workers of iniquity among Thy creatures, or to describe the vexations which have compassed me about in these days for the sake of Thy good pleasure?
(Bahá’u’lláh, Prayers and Meditations by Bahá’u’lláh, p. 229)