Zakharia 8:8

8:8 And I will bring them to settle within Jerusalem. They will be my people, and I will be their God, ¹  in truth and righteousness.’

Zakharia 13:9

13:9 Then I will bring the remaining third into the fire;

I will refine them like silver is refined

and will test them like gold is tested.

They will call on my name and I will answer;

I will say, ‘These are my people,’

and they will say, ‘The Lord is my God.’” ² 

[8:8]  ¹ sn The affirmation They will be my people, and I will be their God speaks of covenant renewal, a restoration of the unbroken fellowship the Lord desired to have with his people but which their disloyalty had shattered. In the eschaton God and Israel will be in covenant union once again (cf. Jer 31:33).

[13:9]  ² sn The expression I will say ‘It is my people,’ and they will say ‘the Lord is my God’ is reminiscent of the restoration of Israel predicted by Hosea, who said that those who had been rejected as God’s people would be reclaimed and once more become his sons and daughters (Hos 2:23).