Making them fit directly in the society would be insanely hard, but if devas childs were undestinguishable from humans at first, you could make them not even notice they are devas themselves until they start to grow up. At school, they will learn how to behave like an human being, what is good and what is bad, get bullied and learn what it feels like.
As they grow up, their physicical, emotionnal and mental abilities get stronger and stronger, evolving way faster than other human childs. They become the bests at classes, the most matures among their "pairs". Teachers praise them and their comrades idealize them... at first. During that process, they start to think that being smart, good and comprehensive are what poeple want them to be, are their ways to get included in the society, they work hard to become what they think poeple want them to be.
Their "natural" evolution pace combined with the evolution induced from their work make them quickly become really, really strong. Their comrades can't understand them anymore, and they don't understand why they can't get understood even though they can understand most of their comrades problems and feelings.
Poeple start to reject them from society while themselves -feeling differents- start to exclude themselves from society.
Leads to solitude and incomprehension, that leads to non-directed anger but also self reflection. Either they figure out they are devas by themselves, either someone else (the teacher / adoptive parents?) figure it out, or their eyes start to become golden and everyone figures out what was wrong.
Then you place them in some genius-specialized school among very smart humans and other devas (if there are any other devas at the exact same period). Lot of geniuses went through the same kind of problems and devas will feel more comfortable around them.
Still, he will continue to grow stronger and stronger, and while humans will work hard to get close to his level, he won't need to. Some poeple will tell him he's lucky, some will attack him telling him he's worth less than them as he can only achieve to do anything because of his unfair devas perks. Because he's really smart and emotionnally comprehensive he will certainly understand that and will start to work hard to become someone that deserve those abilities.
It's, i think, one of the rare scenarios where a godlike being with human-like feelings can smoothly be part of human society without growing anger toward it or becoming insane.
It requires lot of timing and luck tho (but with real gods helping it to happend this way, it could be "easy").
If he knows from the beginning he's not human, he will create a big wall between him and humans that will continuously grow over time, it could end up with the deva acting deliberately differently from humans.
If once poeple figure out he's not human, he gets totally excluded from human company, he will consider humans as worth less than him and could become racist and narcissistic, which will less likely happen if he's compared and can compare itself to the "best humans" around.
His parents need to be chosen really carefully, they need to be smart, comprehensive and wise ( At least, the parent of the same sex as him has to as he'll likely try to impress and look like him ).
Or, you could just make them conditionned since birth to be nice and wise (like Jesus).