יואל ג:ה פירוש: רש״י

And it shall come to pass that whoever shall call etc. as... said—And where did He say it? (Deut. 28:10), “And all the peoples of the earth shall see that the Name of the Lord is called on you.” [from Mechilta, Ex. 12:25]

and among the survivors—And in the remnant that will remain.

whom the Lord invites Heb. קֹרֵא, an expression of those invited to a banquet or to the service of the king, an expression of invitation.