Does god judge thought?

I came up with a bit of a question and I’m having trouble finding the answer. Does god judge prayer and/or thought?

These are my real questions: If we have make a silent prayer in our heads, does god hear? Can he read our prayers in our heads? Do our prayers count as thoughts? If they do, does he judge them? At what point is the cutoff for inner judgement and prayer?

Would love to hear thoughts about this.