This is a position of humility and worship. Alternate translation: "they lay down on the ground with their faces touching the stone pavement" (See: [[rc://en/ta/man/translate/translate-symaction]])
The abstract noun "covenant loyalty" can be expressed with the adjective "loyal" and the verb "promise." Alternate translation: "God will always be loyal to us because of his covenant" or "God will always faithfully do for us what he promised" (See: [[rc://en/ta/man/translate/figs-abstractnouns]])