There are many things that are real that we can’t actually see. We can’t always see air, for example, but we know it’s real. While we can’t see the air around us, if you blow on my arm, I can feel the air. That is “evidence” (a clue) that air exists even when we can’t see it. God has given us clue to His existence

First, nature is evidence of the existence of God. The fact us that the earth is so amazingly made to provide humans and animals a home.

Psalm 19:1 in a whole new light, “The heavens declare the glory of God, and the sky above proclaims his handiwork.”

Second, people, however imperfect accept a universal standard of right and wrong. If there is no God in the world, if there is no Author of life who can distinguish right from wrong, why is it universally accepted that there is such a thing as right and wrong?”

God is the Creator of all things. In other words, the fact that you can see, hear, and feel anything is evidence of the God who created them.

All such things are limited. God is not temporal. None of this can be experienced by the limitations of the senses.

"The natural man cannot receive the things of God because they are spiritually discerned."
1 Corinthians 2:14

"That which can be seen is temporal. That which cannot be seen is eternal." 2 Corinthians 4:18

In Pauls letter to romans“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 people are without excuse.”