I don’t know how Thomas Aquinas concluded the existence of God using these arguments. The most I got out of all five is a proof of a potential of such existence of such God. So the best I can say I respect the believer’s choice to believe in God. For me the proof of God is by talking to him. Call him and ask for a meeting, a phone call, or at least a text message or an email. I am not being sarcastic, I mean exactly to ask god on a personal level to communicate with oneself. And I leave the timing and the method to him. Not if I have other choice. I am sure if you do that sincerely and if there is God, He will let you know and he will be as personal as possible in a way that you can’t prove it to anybody else..