How to “perceive the sweet accents” of the Word of God

O My brother! Sanctify thy heart, illumine thy soul, and sharpen thy sight, that thou mayest perceive the sweet accents of the Birds of Heaven 

- Baha'u'llah  (‘Gems of Divine Mysteries’)

Not to busy oneself with own concerns

Do not busy yourselves in your own concerns; let your thoughts be fixed upon that which will rehabilitate the fortunes of mankind and sanctify the hearts and souls of men. 
- Baha'u'llah  (‘Gleanings from the Writings of Baha'u'llah’)

Need to “sanctify” one’s heart

O Son of Being! Thy heart is My home; sanctify it for My descent.

- Baha’u’llah  (‘The Hidden Words of Baha’u’llah’)

How to treat others

Lay not on any soul a load which ye would not wish to be laid upon you, and desire not for any one the things ye would not desire for yourselves. 

- Baha’u’llah  (‘Gleanings from the Writings of Baha’u’llah’)