For all have sinned - This was the point which he had fully established in the discussion in these chapters.
Have come short - Greek, “Are deficient in regard to;” are lacking, etc. Here it means, that they had failed to obtain, or were destitute of.
The glory of God - The praise or approbation of God. They had sought to be justified, or approved, by God; but all had failed. Their works of the Law had not secured his approbation; and they were therefore under condemnation. The word “glory” (δόξα doxa) is often used in the sense of praise, or approbation, John 5:41, John 5:44; John 7:18; John 8:50, John 8:54; John 12:43.