What has God the Father prepared believers to share in?

According to Colossians 1:12, God the Father has made believers meet, or prepared them, to be partakers of the inheritance of the saints in light. This inheritance belongs to those delivered from darkness and translated into the kingdom of His dear Son, making them citizens of heaven.

Les explains that Paul, writing to Gentile believers in Colossae, gives thanks to the Father, who has prepared believers to be partakers of the inheritance of the saints in light. God the Father has delivered them from the power of darkness and translated them into the kingdom of His dear Son. That kingdom is in heaven, so believers are now citizens of heaven because they are members of the Kingdom of Christ. Les connects this to the believer's role as an ambassador of heaven, representing that homeland while living here and now.

Colossians 1:12

Giving thanks unto the Father, which hath made us meet to be partakers of the inheritance of the saints in light:

What has God the Father made believers meet or qualified to receive?

The Father has qualified believers to be partakers of the inheritance of the saints in light, delivering them from the power of darkness and translating them into the kingdom of His dear Son, in whom they have redemption through His blood and the forgiveness of sins according to His grace.