There is no limit
“But, “Let the one who boasts boast in the Lord.” 2 Corinthians 10:17
“God does not ask us to do in our own strength the work before us. He has provided divine assistance for all the emergencies to which our human resources are unequal. He gives the Holy Spirit to help in every strait, to strengthen our hope and assurance, to illuminate our minds and purify our hearts.
Christ has made provision that His church shall be a transformed body, illumined with the light of heaven, possessing the glory of Immanuel. It is His purpose that every Christian shall be surrounded with a spiritual atmosphere of light and peace. There is no limit to the usefulness of the one who, putting self aside, makes room for the working of the Holy Spirit upon his heart and lives a life wholly consecrated to God” Counsels for the Church 99.1,2