As I've said in previous posts, the ancient people knew the Creator before they knew His Name. They observed Him in creation and were humbled and awed and showed respect.
From the Carmina Gadelica:
Greetings to you, sun of the season
And you walking high in the heavens
Your steps strong on the wings of the heights
And you the adored mother of the stars.
It is you lying down in the harbor of danger (ie. the sea)
Without bedevilment and without dread;
It is you rising up on the peaked wave of peace
Like a young queen in flower.
In this video you can see the spring solstice sunbeam being captured in this ancient tomb. I talked about Newgrange at the winter solstice. Knowth (rhymes with south) is also in the Boyne Valley.
I believe it is good to follow our Celtic ancestors' example and observe what God has done and continues to do in nature. Even more recent generations acknowledge the wonder and power of God through his creation.