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.

Ezekiel 33:33

33:33 When all this comes true – and it certainly will – then they will know that a prophet was among them.”

John 17:21

17:21 that they will all be one, just as you, Father, are in me and I am in you. I pray that they will be in us, so that the world will believe that you sent me.

John 17:23

17:23 I in them and you in me – that they may be completely one, so that the world will know that you sent me, and you have loved them just as you have loved me.

John 17:25

17:25 Righteous Father, even if the world does not know you, I know you, and these men know that you sent me.