“For the hope which is laid up for you in heaven, whereof ye heard before in the word of the truth of the gospel;”
King James Version (KJV)
1:5 Ye heard before - I wrote to you. In the word of truth, of the gospel - The true gospel preached to you.
Col 1:5 For the hope. He gives thanks for their hope of heaven. Which is laid up for you in heaven. This suggests that they have a treasure laid up in heaven which they hope to use. Their treasure is above. Whereof ye heard before. They heard of this hope when the gospel was preached to them.