The most basic proof of God’s existence is simply what He has made. “For since the creation of the world God's invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that men are without excuse” (Romans 1:20).
"Mula pa nang likhain Niya ang sanlibutan, ang kalikasang di nakikita, ang kanyang walang hanggang kapangyarihan at pagka-Diyos ay maliwanag na inihahayag ng mga bagay na ginawa Niya. Kaya't wala na silang maidadahilan" (Roma 1:20).