The stronger one’s knowledge of these [names and attributes of Allah] while worshiping Allah, the stronger his tawhid (belief in the Oneness of Allah). So when he knows that Allah is singled out by the perfect attributes, alone in His magnificence, majesty and splendor, there being no comparison to Him in His perfection, then it becomes more realistic that by this means he will know and fulfill his belief that He is the true God, and divinity other than His is false.
As-Sa’di, Allamah ‘Abd al-Rahman, An Explanation of Muhammad ibn ‘Abd al-Wahhab’s Kitab Al-Tawhid (Birmingham: Al-Hidayah, 2003), p. 199-200.
(Read on pg 36-37, Umm Abdurrahman Sakina Hirschfelder, Who Is Allah? His Names and Attributes and their Significance to the Individual. International Islamic Publishing House. Riyadh:2010.)