ישעיהו ס:ה פירוש: רש״י ואבן עזרא

Then you shall see and be radiant Heb. וְנָהַרְתָּ, from נְהוֹרָה, [Aramaic for light,] then you shall see and be radiant [from Jonathan].

Then. When kings come unto thee and bring thee thy children. תראי Thou shalt fear,³A. V., Thou shalt see. I. E. seems to have read תִּֽרְאִי or תִּרְאִי (root ירא), instead of תִּרְאִי. like a man that trembles when help comes to him suddenly, or anything he did not anticipate; this is usually the case with a person who finds something.

and your heart shall be startled and become enlarged And your heart shall wonder and become enlarged.