What has the Father already done for believers in Christ?
The Father has prepared believers to be partakers of the inheritance of the saints in light. He has already delivered them from the power of darkness and translated them into the kingdom of His dear Son. Paul writes to believers, so in Christ they are even now in that kingdom.
Les teaches from Colossians chapter 1 that Paul prays for the Colossi believers, and this prayer is valid for us today. Paul gives thanks unto the Father, who has made us meet, or prepared us, to be partakers of the inheritance of the saints in light. The Father, past tense, has delivered us from the power of darkness and has already translated us into the kingdom of His dear Son. Paul always speaks to or on behalf of believers, never an unbeliever. So if you are a child of God, you are in the kingdom now. When Christ comes at His second coming and sets up the kingdom on the earth, believers will be with Him.
Who hath delivered us from the power of darkness, and hath translated us into the kingdom of his dear Son: