They will Come.
They are coming;
Coming from the east and west, north and south.
They will come with know-how; they  will come with expertise; they will come with skill and acumen, experience and zeal.
They will come with passion to build. They will come with enthusiasm and initiative and eagerness to continue and finish the work that is afoot.
They will buy into the vision and find fulfilment in their involvement. They will not be tired and will not retire.
Foreigners will come with their resources- gold and silver -to build your walls.
They will do it with joy, with flourish, with a sense of mission like Cyrus of old; like the mid-wives who protected the Israelites; like the remnants who joined hands to build with Nehemiah.

20 … “Be strong and of good courage , and do it; do not fear nor be dismayed , for the Lord God; my  God; will be with you. He will not leave you nor forsake you , until you have finished all the work for the service of the house of the Lord.
21 Here are the divisions of the priests and the Levites for all the service of the house of God; and every willing craftsman will be with you for all manner of workmanship , for every kind of service; also the leaders and all the people will be completely at your command.”
1Chro.28:20-21
The Gentiles Bless Zion
   1 Arise , shine;  For your light has come!  And the glory of the Lord is risen upon you.
  3 The Gentiles shall come to your light , And kings to the brightness of your rising.
Isa60:3