The Greek word for world in 1 John 2:2 is κοσμου (cosmo). That's where we get the word Cosmology from which is the Study of the Entire World, not just bits and pieces of it where believers live in.A answer for 1 Jn 2:2
2 And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.
Most today ise this scripture to oppose limited atonement,but it doesnt,in fact it supports it. Now here's a answer from a Gospel writer that is legit,
Atonement For Whom? (2) | godsonlygospel
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Calvinists are so silly.