Hello you, and this is talking about how Jesus Christ overcame Satan, Death, Hell/She'ol, Sin, and the entire World.
1 John 2: 1My little children, I am writing these things to you so that you will not sin. But if anyone does sin, we have an advocate before the Father— Jesus Christ, the Righteous One. 2He Himself is the atoning sacrifice for our sins, and not only for ours but also for the sins of the whole world.
the [sins]
τοῦ (tou)
Article - Genitive Masculine Singular
Strong's Greek 3588: The, the definite article. Including the feminine he, and the neuter to in all their inflections; the definite article; the.
of [the] whole
ὅλου (holou)
Adjective - Genitive Masculine Singular
Strong's Greek 3650: All, the whole, entire, complete. A primary word; 'whole' or 'all', i.e. Complete, especially as noun or adverb.
world.
κόσμου (kosmou) - Kosmos -> The whole of Creation
Noun - Genitive Masculine Singular
Strong's Greek 2889: Probably from the base of komizo; orderly arrangement, i.e. Decoration; by implication, the world (morally).
John 3: 16 For God so loved the world (Kosmos - The Whole Creation) that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.
1 John 2: 1My little children, I am writing these things to you so that you will not sin. But if anyone does sin, we have an advocate before the Father— Jesus Christ, the Righteous One. 2He Himself is the atoning sacrifice for our sins, and not only for ours but also for the sins of the whole world.
the [sins]
τοῦ (tou)
Article - Genitive Masculine Singular
Strong's Greek 3588: The, the definite article. Including the feminine he, and the neuter to in all their inflections; the definite article; the.
of [the] whole
ὅλου (holou)
Adjective - Genitive Masculine Singular
Strong's Greek 3650: All, the whole, entire, complete. A primary word; 'whole' or 'all', i.e. Complete, especially as noun or adverb.
world.
κόσμου (kosmou) - Kosmos -> The whole of Creation
Noun - Genitive Masculine Singular
Strong's Greek 2889: Probably from the base of komizo; orderly arrangement, i.e. Decoration; by implication, the world (morally).
John 3: 16 For God so loved the world (Kosmos - The Whole Creation) that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.