In the absence of other proof, the thumb alone would convince me of God's existence.
The experience of the enormity we falteringly label "divine" is unconditional love. Absolute openness, unbounded mercy and compassion ~ the sense of presence, of simply being, when investigated brings one toward the experience of the Beloved. At times the heart bursts into flame, the mind kind and clear. But usually it is just a simple spaciousness and ease that lets thoughts float in mercy and awareness and recognizes the evolutionary struggle in everyone they meet.