St. Paul's epistle to the Romans 9:18-24

Therefore God has mercy on whom He wills,
and whom He wills He hardens.
You will say to me then,
"Why does He still find fault?
For who has resisted His will?"

But indeed, O man, who are you
to reply against God?
Will the thing formed say to him who formed it,
"Why have you made me like this?"
Does not the potter have the power over the clay,
from the same lump to make one vessel
for honor and another for dishonor?

What if God, wanting to show His wrath
and to make His power known,
endured with much longsuffering
the vessels of wrath prepared for destruction,
and that He might make known
the riches of His glory on the vessels of mercy,
which He had prepared beforehand for glory,
even us
whom He called not only of the Jews,
but also of the Gentiles?