I am convinced that its a mistake to begin describing God to small children by saying He's Invisible.
It is very hard at times to believe in something Invisible.
And in our times, the number of people who disbelieve in God is alarming, and growing.
And so I propose that we do as did the Ancients, and compare God to the Sun.
A fundamentalist will likely recoil, for fear of the sin of idolatry. We do not worship the Sun or the Sun God, but it is in fact helpful to think of God as one thinks of the Sun. Consider:
His Mercies are New Every Morning (Lamentations 3:22-23)
Our God is a consuming Fire (Deuteronomy 4:24)
The Sun is always right over my shoulder as I work in this Garden called Earth. And even at Night, He is usually reflected by the adoring Mirror called the Moon. There are Dark Nights and New Moons, to be sure, but in general the Sun is a sign of God's constancy, for he makes it to shine "upon the evil and the good" alike (Matthew 5:45).
The birth of the Sun is December 25, as in quite literally after the Winter Solstice the Sun ceases its seasonal migration and hovers in relatively the same spot until the 25th, when it begins again to climb toward the zenith of the Sky.
The Sun is directly related to every single Life form on this Planet. Without it there could be no Light, no Heat, no Vegetation, no Photosynthesis.
Consider the similarity between the words Sun and Son. If God Himself planned Human Language (and I allege that He did) then this similarity has to be significant.
We all rotate around the Sun. We cannot escape its gravity. We cannot envision its Death without also envisioning our own. We are intimately linked.
"In Him we live and move and have our Being." (Acts 17:28)
The God of Scripture is described as so great and glorious that flesh cannot stand in his presence.(1 Corinthians 1:29) Moses himself feared to look upon God because of the exceeding great brightness of His visage and glory. Were an astronaut to approach the Sun, they would be consumed and incinerated by that holy heat.
The Sun, if nothing else, is a symbol that all things depend upon One Thing, and that One Thing is far off, but connected to everything, and unapproachable yet eternally beneficient.
In Nature there are abundant signs if we will but see. Y.E.S. Yes Eyes See!
"It burns like a mighty fire, it rises like a mighty flame. Lord my greatest desire is to be sealed in Love by your Name." - Darrell Evans