Words are polysemous.

Cool, and? It's the first time i'm hearing someone use the term "omnipotent" not in its most literal sense. I bet i'm not the only one.

it's normal to use “significant” with a different sense than when you're speaking about something else.

Because "significant" is an abstract term, not a concrete one. "Omnipotent" is a concrete term though, and a pretty straightforward one at that. The only time you'd unironically use it not in its most literal sense would be to mislead people.

Yes, lots of words have multiple meanings. "Omnipotent" is hardly one of them, and even then, as you've already noted yourself, the bible doesn't use it directly. People derive this characteristic of Christian God from his actions, and when they talk about god's omnipotence, they use the word in its literal sense. People here also were using the literal meaning of the word.

Idk about you, but where I'm from, there's a saying: "terms aren't argued over, they're agreed upon". People here colloquially used the term "omnipotent" as a substitute for "all powerful", until you chimed in with your "uhm acshually ☝️🤓" remark, offering an arbitrary and dubious definition, basically solving a non-existent problem.