No complaining or arguing = becoming. That is a tall order, and one in which requires us to no longer walk as "mere men" (1 Corinthians) -- the idea of becoming blameless and pure, children of God is a gift of grace (first) and choosing to respond (second) ---
To say such simple things like NOT complaining or NOT arguing (especially within the Church) leads to life on the same scale of light in the universe --- is quite a metaphor, considering the universe is largely without light --- except for the stars... and that without stars... it would be one gigantic black void of ever expanding dark matter in space.
Funny thing is the light from most of the stars we see --- is really, really old -- as in it's been traveling at the speed of light (which is pretty fast) for thousands (some would say millions or billions) of light years. Stars are born, shine, and die - but their light is seen for generations to come -- and the light that shines --- is unmistakable.
Stars shine. Period.
ps -- according to NASA, the images above are (invisible to the human eye) those stars that are part of the draco images, which in theory, are what remains of the "light" from the big bang theory ... I don't buy that theory, but I concede that however old -- stars shine light for generations to come.