There are more ways of knowing than scientific knowing. I think this is the main disagreement between atheists and those who believe in God or something like God.
Love is a way of knowing. I feel love, and I love, but you don’t see any scientific studies about love. There are studies about comfort, affection, romance, attachment, and relationships galore. But you can’t quantify love, and it’s mighty difficult to qualify it.
When you know something that transcends logic, you can’t explain it. You can’t explain love. Think about all the people you know who are in love with someone and you just don’t understand it. You don’t know why your friend picked that one person out of the whole universe, because from the outside it doesn’t make sense. That’s ok. Maybe it isn’t love, but that’s not up to us to decide.
The love of God doesn’t make sense. It just is. When you know love, no one can tell you it doesn’t exist. Not your parents, not your friends, not yourself. You just know.
Faith is a way of knowing that also doesn’t make sense, but it doesn’t matter. It’s like skipping a step. You don’t need to figure it out. You just know faith. You have faith. It just is.