This compilation explores the concept of becoming spiritually strong — a condition referred to in the Bahá'i Holy Writings as 'firmness in the Covenant'. Beginning with the heart and then looking at the importance of vision and understanding, the process of becoming spiritually strong is treated as an exciting journey of discovery, leading to a condition of spiritual happiness and true liberty. To reach that condition is to fulfil the spiritual destiny of the soul, and attain what Bahá'u'llah describes as "..the City of Certitude".

Other vital aspects of the Faith, such as community life, the Administrative Order, and relating to Institutions are dealt with in the light of this journey of the soul, a theme which provides some connection between each section.