Knowing Allah by His Most Beautiful Names increases ones faith, as Shaykh Abd al-Rahmaan ibn Sadi (may Allah have mercy on him) said: Believing in and knowing the Most Beautiful Names of Allah includes the three types of Tawheed:
1.Tawheed al Ruboobiyyah (Unity of Divine Lordship),
2.Tawheed al-Uloohiyyah (Unity of the Divine Nature) and
3.Tawheed al-Asma wal-Sifaat (Unity of the Divine Names and Attributes).
These three types of Tawheed form the essence and joy of faith (the word translated here as joy implies peace and relief from stress), and this knowledge is the basis and purpose of faith.
The more a person learns about the Names and Attributes of Allah, the more his faith increases and the stronger his conviction becomes.
_(Al-Tawdeeh wal-Bayaan li Shajarat al-Eemaan by al-Sadi, p. 41)._
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