Firstly what is Sin?
Sin is a violation of God's divine will or commandment.
According to the teachings of Bro. Eli Soriano Adam did not sin by eating the apple fruit.
Everything that God created is good and not for our destruction according Genesis 1:31 and 1 Timothy 4:4
Genesis 1:31 And God saw every thing that he had made, and, behold, it was very good. And the evening and the morning were the sixth day.
And
1 Timothy 4:4 For every creature of God is good, and nothing to be refused, if it be received with thanksgiving:
The problem we have is the improper use of what God created.
God commanded Adam not to eat of the tree of knowledge of good and evil. This tree was not the only tree planted in the garden Eden, they were many trees planted for Adam to eat.
God knew what will be good for Adam and provided for him then he gave the instructions not to eat of the tree of the knowledge of good and evil according Genesis 2:16-17
Genesis 2:16 And the LORD God commanded the man, saying, Of every tree of the garden thou mayest freely eat: 2:17 But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die.
Therefore Adam sin by transgressing the order of the law of God by eating of the tree he was commanded not to eat.
1 John 3:4 Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.
Satan is the arc enemy of God and will always work against God by trying to make us transgress law and commandment.
If we listen to him as Eve did, we will sin against God and the consequences according to the passage below is death.
Romans 6:23 For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.
May the Lord to obey and keep his commandments.