The Bible:
Acts 17:27-28 - Seek God for in Him we find ourselves
Colossians 1:16 - All things were created through and for Him
1 Corinthians 2:9 - God's Love
1 Corinthians 13:12 - In Heaven we get to see God face to face
John 14:3 - Jesus prepares a place for us in Heaven
The Catechism of the Catholic Church (CCC)
CCC 374 - Created to be in relationship with God
CCC 35 – We are called to grown in relationship with Him in our lives
CCC1023 – We are created for Heaven
Official Church Documents:
Gaudium et Spes, (The Church in the Modern World, Vatican Council II), Paragraph 19
Benedictus Deus, Encyclical by Pope Benedict XII
Other Sources:
Fourteen Questions about Heaven by Peter Kreeft
The Lamb’s Supper: The Mass as Heaven on Earth by Scott Hahn