Knowledge precedes expression and action. This is confirmed in the divine verse ‘Know therefore that there is no God but Allah, and then repent your sin.’ (47:19). God requires of us first knowledge and then action.

—Muhammad b. Ismaa’eel al-Bukhaaree

Ibn ‘Abd al-Wahhab, Muhammad, Three Essays on Tawheed (North American Trust Publications, 1979), p. 12 

(Read on pg 31, Umm Abdurrahman Sakina Hirschfelder, Who Is Allah? His Names and Attributes and their Significance to the Individual. International Islamic Publishing House. Riyadh:2010.)