George Berkeley to be sure was an empiricist. If we are only limited to what our eyes are capable of seeing then we would not truly be able to understand or know anything at all. We couldn't make any judgment as to the truth of one religion or philosophy from another. How do we know truth? We know it based on Scripture alone anything else simply reduces itself to skepticism. The Bible alone is the word of God.

With our ideas we are completely passive

"I do not understand how our ideas, which are things altogether passive and inert, can be the essence, or any part (or like any part) of the essence or substance of God, who is an impassive, indivisible, pure, active being." (Pg. 45) "And, hath it not been made evident that no such sunstance can possibly exist? And, though it should be allowed to exist, yet how can that which is inactive be a cause; or that which is unthinking be a Cause of thought?" (Pg. 47) - Philonous in the Three Dialogues, George Berkeley

God is one and so His knowledge is eternal

"The knowledge of God proves him without successive duration. God knows all things, past, present, and to come, that is, which are so to us; not that they are so to him; these he knows at once, and all together, not one thing after another, as they successively come into being; all things are open and manifest to him at once and together, not only what are past and present, but he calls things that are not yet, as though they were; he sees and knows all in one view, in his all-comprehending mind: and as his knowledge is not successive, so not his duration." - John Gill, The Body of Divinity, Pg. 49

If there was a successive  moments in God, then He would not be immutable if he thought like us.

"Is not time measured by the succession of ideas in our minds?" says Philonous, in George Berkeley's Three Dialogues, Pg. 23