Saint Walker, the First Blue Lantern in the DC Universe.
This is his story 8according to Wikia)
Bro'Dee Walker was a devout family man, married to Quanta. They had two children together, a son named Jatt and a daughter named Peesh. Their planet was ending because their sun became unstable, and the ensuing panic caused widespread rioting and violence. Feeling just reading scripture with his family was not enough, he decided they would search for their Messiah. A being shrouded in mystery, of whom was said he could only be found on Mount Helious by true believers. Though his own father advised against it, Walker and his family decided to undertake the journey.
The journey was perilous, but Walker explained all their hardships as a test by their God. All would be well, he assured them. But not for all, for one by one his relatives would perish. His father sunk through a rope bridge and fell into a canyon. His wife and daughter drowned when a calm river suddenly became flooded by a dam break upstream. And finally, his son succumbed to eating poisonous fruits. His hope would not abate, nor would his faith.
He finally reached the top of Mount Helious, only to have all his hope slip away. He found no Messiah, just a smooth stone monolith. Enraged, he cursed God and tore up the scripture, commanding him to show him the Messiah. And God answered. A single bolt of lightning, followed by a burst of rain. As he looked at the monolith, he saw his reflection in the polished stone and had an epiphany. He was the Messiah.
He returned to his hometown, still engulfed in riots. He preached for days on end, until finally, all listened. And when they did, their red sun turned blue, and a blue ring found Walker. Their planet was safe.
