I commented that the syllogism is false because the content of your heart depends on the knowledge you have. Knowledge is good, therefore proving things is good. This is why people want to not simply make up their mind internally about God and sit with it, but rather discuss it and thus gain objective knowledge and be better men.
How do you know that the contents of one’s heart depends on the knowledge one has? That’s quite an assumption.
Why wouldn’t God know what is in one’s heart, even if that person did not know God? Isn’t that limiting God’s ability to know something, making man’s knowledge a prerequisite for God’s ability to know what is in a man’s heart?