Wrong. He was referring to our inheritance for the day of redemption, which is to come. Eph 1:14 says so clearly.
What is to come, is the Day of Judgement, when the Lord returns and gathers His people at the resurrection/rapture, in which all His people will stand before Him to be judged according to our deeds. This account is detailed in Matthew 25:31-46.
Some will inherit the kingdom of God, some will not.
Some will enter the kingdom of God and some will not.
We who have faith in Christ for eternal life, have the hope of this inheritance in which we have the Spirit as a deposit, as a garuantee of that promise.
- that having been justified by His grace we should become heirs according to the hope of eternal life.
This hope we have will be realized when we come forth at the resurrection of life, in which we hear these words from our beloved Savior:
- Come, you blessed of My Father, inherit the kingdom prepared for you from the foundation of the world:
Please read the context of 2 Corinthians 5:5, which to quoted in the OP, along with 2 Corinthians 1:19-24, and have tied to Ephesians 1:14.
2 Corinthians 5:1-11
For we know that if our earthly house, this tent, is destroyed, we have a building from God, a house not made with hands, eternal in the heavens. 2 For in this we groan, earnestly desiring to be clothed with our habitation which is from heaven, 3 if indeed, having been clothed, we shall not be found naked. 4 For we who are in this tent groan, being burdened, not because we want to be unclothed, but further clothed, that mortality may be swallowed up by life. 5 Now He who has prepared us for this very thing is God, who also has given us the Spirit as a guarantee.
6 So we are always confident, knowing that while we are at home in the body we are absent from the Lord. 7 For we walk by faith, not by sight. 8 We are confident, yes, well pleased rather to be absent from the body and to be present with the Lord.
The Judgment Seat of Christ
9 Therefore we make it our aim, whether present or absent, to be well pleasing to Him. 10 For we must all appear before the judgment seat of Christ, that each one may receive the things done in the body, according to what he has done, whether good or bad. 11 Knowing, therefore, the terror of the Lord, we persuade men; but we are well known to God, and I also trust are well known in your consciences. 2 Corinthians 5:1-11
2 Corinthians 1:19-24
19 For the Son of God, Jesus Christ, who was preached among you by us—by me, Silvanus, and Timothy—was not Yes and No, but in Him was Yes. 20 For all the promises of God in Him are Yes, and in Him Amen, to the glory of God through us. 21 Now He who establishes us with you in Christ and has anointed us is God, 22 who also has sealed us and given us the Spirit in our hearts as a guarantee.
23 Moreover I call God as witness against my soul, that to spare you I came no more to Corinth. 24 Not that we have dominion over your faith, but are fellow workers for your joy; for by faith you stand. 2 Corinthians 1:19-24
JLB