Revelation 21:5 He who was seated on the throne said, ‘I am making everything new!’ Then he said, ‘Write this down, for these words are trustworthy and true.’
God told us, through the prophets, (see Isaiah 43:19) He is going to change everything so we can live with Him eternally.
How could this be if He hates sin? The only way it to make it as if we had never sinned in the first place...
This could only be done though the ultimate sacrifice where a perfect person would give His life in our stead...
That man is Jesus Christ!