Zech 10:8

10:8 whistle for them. As the shepherd whistles for his flock (cf. Is. 7:18), so God will recall the exiles from foreign lands (Deut. 30:1–10).

as they were before. As the Israelites had earlier multiplied (Ex. 1:7), in fulfillment of God’s covenant promise to Abraham (Gen. 15:5; 17:6).