Jeremiah 15:19-21

Therefore thus says the LORD: 

"If you return, Then I will bring you back; You shall stand before Me;
If you take out the precious from the vile, You shall be as My mouth.
Let them return to you, But you must not return to them. 

And I will make you to this people a fortified bronze wall;
And they will fight against you, But they shall not prevail against you;
For I am with you to save you And deliver you," says the LORD. 
"I will deliver you from the hand of the wicked, And I will redeem you from the grip of the terrible."