It's not in scripture. Peter was speaking to all humans.
2 Peter 3:9 The Lord is not slow to fulfill his promise as some count slowness, but is patient toward you, not wishing that any should perish, but that all should reach repentance.
That's not the only place:
John 3:16-17 For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life. For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him.
Mark 2:17 And when Jesus heard it, he said to them, “Those who are well have no need of a physician, but those who are sick. I came not to call the righteous, but sinners.”
Paul, to the Romans, describes the "elect", referring to Jews only:
Romans 11:7 What then? That which Israel sought, he hath not obtained: but the election hath obtained it; and the rest have been blinded.
So are the non-elect doomed? No, they are not, according to God's word:
Romans 11: 11 I say then, have they so stumbled, that they should fall? God forbid. But by their offence, salvation is come to the Gentiles, that they may be emulous of them. 12 Now if the offence of them be the riches of the world, and the diminution of them, the riches of the Gentiles; how much more the fulness of them? 13 For I say to you, Gentiles: as long indeed as I am the apostle of the Gentiles, I will honour my ministry, 14 If, by any means, I may provoke to emulation them who are my flesh, and may save some of them.