tnHeb “you hide for times in trouble.” The interrogative “why” is understood by ellipsis; note the preceding line. The Hiphil verbal form “hide” has no expressed object. Some supply “your eyes” by ellipsis (see BDB 761s.v. I עָלַם Hiph and HALOT835s.v. I עלם hif) or emend the form to a Niphal (“you hide yourself,” see BHS, note c; cf. NEB, NIV, NRSV).