Reference for Job 39:28

סֶ֣לַע יִ֭שְׁכֹּן וְיִתְלֹנָ֑ן עַֽל־שֶׁן־סֶ֝֗לַע וּמְצוּדָֽה׃

She dwelleth and abideth on the rock, Upon the crag of the rock, and the stronghold.