What does being 'fitted' for eternal inheritance mean?

The concept of being 'fitted' for eternal inheritance, as mentioned in Colossians 1:12, speaks to God's work in making us suitable for participation in His divine kingdom. This fitting is not based on our merit but is wholly attributed to the redemptive work of Christ, who has made His people righteous before God. The significance of this is profound; it illustrates that despite our unworthiness, God grants us the honor of being heirs in His eternal kingdom. In 2 Corinthians 5:21, we see that God made Christ, who knew no sin, to be sin for us, so that we might become the righteousness of God in Him. Therefore, being fitted involves God's gracious act of transforming us into vessels that are worthy of His glory and eternity.