Hebrews 12:22-24

(22-24) “What it was to which Israel in the time of the Old Covenant drew nigh, we have now heard. Their drawing nigh was at the same time a standing afar off; the mount of the revelation might not be approached by them; the voice of God was too terrible to be borne; and yet it was only tangible material nature in which God at once manifested and concealed Himself. The true and inner communion with God had not yet been revealed: first must the Law lead to the painful consciousness that sin prevents such communion, and intensify the longing that sin may be taken out of the way. Under the New Covenant, no longer is a tangible mountain the place of a divine revelation made from afar; but heaven is thrown open, and a new super-sensuous world in which God is enthroned is opened to admit us, opened through the Mediator of the New Covenant, accessible in virtue of His atoning blood” (Delitzsch).