Dabney settles the debate on sufficiency:

“His purpose was not to teach us philosophical knowledge, but theological. Nothing seems plainer than that God acts on the scheme of leaving men to find out, by their own researches, all those facts and laws of nature, the knowledge of which may minister to curiosity or to material well-being; while He limits Himself to giving us those divine facts and laws which man's
research could not discover, or could not adequately establish, necessary for our attaining our proper theological end.”