Acts of the Apostles, pg. 257
“Ye are witnesses, and God also,” the apostle continued, “how holily and justly and unblamably we behaved ourselves among you that believe: as ye know how we exhorted and comforted and charged every one of you, as a father doth his children, that ye would walk worthy of God, who hath called you unto His kingdom and glory.
“For this cause also thank we God without ceasing, because, when ye received the word of God which ye heard of us, ye received it not as the word of men, but as it is in truth, the word of God, which effectually worketh also in you that believe.” “What is our hope, or joy, or crown of rejoicing? Are not even ye in the presence of our Lord Jesus Christ at His coming? For ye are our glory and joy.”
Acts of the Apostles, p. 257