John Gill Commentary Isaiah 60:10

"And foreigners shall build up thy walls, and their kings shall minister unto thee: for in my wrath I smote thee, but in my favor have I had mercy on thee." — Isaiah 60:10 (ASV)

And the sons of strangers shall build up thy walls
The sons of the people; or Gentiles, as the Targum; who were strangers from the covenants of promise, and aliens from the commonwealth of Israel; strangers to God and Christ, and the Spirit of Christ, and to the Gospel, and all that is good; yet the sons of these, being in great numbers converted everywhere, will be useful in building up the church of God, in strengthening, protecting, and defending it; these are the same with those afar off, that shall come and build in the temple of the Lord, (Zechariah 6:15) .

and their kings shall minister unto thee ;
that is, the kings of the Gentiles, as Constantine, and some other truly Christian kings and emperors, have done, though their numbers have been very small as yet; but, when this prophecy is fulfilled, it will be a general case; kings everywhere will be nursing fathers, and queens nursing mothers to the church, will serve the interest of it, and promote it to the uttermost of their power; see (Isaiah 49:23) (Psalms 72:10Psalms 72:11) :

for in my wrath I smote thee, but in my favour have I had mercy on
thee ;
for the Jews' rejection of the Messiah, for their contempt of his Gospel, and persecution of his apostles and ministers, wrath came upon them to the uttermost, upon their city, temple, and nation, to the destruction of them, and which is still upon them; and though blindness is happened unto them, and they are shut up in unbelief, yet there is a time when the Lord will have mercy on them, call and convert them, and return their captivity; see (Romans 11:25Romans 11:26Romans 11:31Romans 11:32) (Jeremiah 30:18) .