The way I understand this scripture is that God is stoked when you believe He is there even though you can’t see Him. He is happy with you because you continue to diligently seek Him out. You need to have Faith to believe in God, because Faith is the evidence of things we can’t see in the human realm.
I will probably never see a million dollars in my lifetime but I know that it exists and if I diligently seek it, I would find it and be rewarded as many others before me. I hope that makes sense.