Zechariah 2:9

2:9 “I am about to punish them in such a way,” he says, “that they will be looted by their own slaves.” Then you will know that the Lord who rules over all has sent me.

Zechariah 4:9

4:9 “The hands of Zerubbabel have laid the foundations of this temple, and his hands will complete it.” Then you will know that the Lord who rules over all has sent me to you.