Gods word says it Rom 9:13
13 As it is written, Jacob have I loved, but Esau have I hated.
And I dont believe Esau or others God hates will He have Mercy upon, because they, His Love and Mercy go hand in hand in His Salvation Eph 2:4-5
4 But God, who is rich in mercy, for his great love wherewith he loved us,
5 Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved)
If you had paid attention to the context in Romans 9 you would see that Rom 9:13-16
13 As it is written, Jacob have I loved, but Esau have I hated.
14 What shall we say then? Is there unrighteousness with God? God forbid.
15 For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion.
16 So then it is not of him that willeth, nor of him that runneth, but of God that sheweth mercy.