Jamieson, Fausset and Brown on Isaiah 60:5

5. see--(Is 60:4), namely, the bringing back of thy sons.

flow together--rather, "overflow with joy" [Lowth]; or, from a different Hebrew root, "be bright with joy" [Gesenius] (Job 3:4).

fear--rather, beat with the agitation of solemn joy at the marvellous sight [Horsley] (Jr 33:9).

be enlarged--swell with delight. Grief, on the contrary, contracts the heart.

abundance of ... sea--the wealth of the lands beyond the sea, as in Solomon's time, the type of the coming reign of the Prince of peace.

converted--rather, "be turned," instead of being turned to purposes of sin and idolatry.

forces--rather, "riches."