Romans 15:29 : And I know that, when I come unto you, I shall come in the fullness of the blessing of Christ. Before a church, or an individual, can receive the "fullness of the blessings of Christ," the heart must be open to receive such blessings. It seems that Paul felt sure that the brethren at Rome were ready in heart and mind to receive whatever additional blessings they needed. Perhaps this included Additional spiritual gifts.