(67:13) And conceal your speech or publicize it; indeed, He is Knowing of that within the breasts. (67:14) Does He who created not know, while He is the Subtle, the Acquainted? (67:15) It is He who made the earth tame for you - so walk among its slopes and eat of His provision - and to Him is the resurrection. (67:16) Do you feel secure that He who [holds authority] in the heaven would not cause the earth to swallow you and suddenly it would sway? (67:17) Or do you feel secure that He who [holds authority] in the heaven would not send against you a storm of stones? Then you would know how [severe] was My warning. (67:18) And already had those before them denied, and how [terrible] was My reproach. (67:19) Do they not see the birds above them with wings outspread and [sometimes] folded in? None holds them [aloft] except the Most Merciful. Indeed He is, of all things, Seeing.