The axiomatic declaration of Romans 3: 19-20 is the foundation of all religions I know. It says that: there is a non-material form of life which governs the material form of life :the living must obey the laws enacted by the invisible , non-material , world.
This dominance of the non-material existence over the material existence is found in its simple expression in book 23 of the Iliad when the ghost of Patroclus appears to Achilles.
" then there came to him the spirit of hapless Patroclus, in all things like his very self, in stature and fair eyes and in voice, and in like raiment was he clad withal; and he stood above Achilles' head and spake to him, saying:“Thou sleepest, and hast forgotten me, Achilles.  Not in my life wast thou unmindful of me, but now in my death! Bury me with all speed, that I pass within the gates of Hades. Afar do the spirits keep me aloof, the phantoms of men that have done with toils, neither suffer they me to join myself to them beyond the River, but vainly I wander through the wide-gated house of Hades.  And give me thy hand, I pitifully entreat thee, for never more again shall I come back from out of Hades, when once ye have given me my due of fire. Never more in life shall we sit apart from our dear comrades and take counsel together, but for me hath loathly fate"http://www.perseus.tufts.edu/hopper/tex ... Acard%3D54
For those who do not believe in the existence of an afterlife every religion is a closed book ; only religious people should be considered as political agents representing one group.
For those who believe in a dominant invisible power governing their behaviour , the specific nature of that belief is very important.
Why are you interested in Romans 3 :19?