It means from God’s point of view, He has already provided proof.
Even more, He (in the way things exist) has provided information to us as to his nature.
What do I mean by that?
Are you familiar with the concept of the Tri-une nature of God (Trinity)?
God the Father, God the Son, God the Holy Spirit. (3 in One) is the concept.
But, how can three things be one thing? Romans 1:20 says creation can explain it, that is, if the Trinity is true.
Is it?
Space - 3 dimensions (Height, Width, Depth) - which, without all three, the volume of the entire universe would be ZERO (all three must exist for us to have space).
Time - 3 dimensions - Past, Present, Future
Matter - 3 basic (non-charged at rest states) Liquid, Solid, Gas
Matter - Electrons, Protons, Neutrons
Color - three major components...
Life - Plants, Animals, Mankind
Earth - Land, Sea, Air
etc, etc, etc
I never thought about all the 3’s in nature...wow!