New Defender's Study Bible Notes
20:30 your own selves. It is sad indeed that the ordained leaders of the church throughout church history have all too often been responsible for leading the flock astray after some “wind of doctrine” (Ephesians 4:14), instead of feeding the flock with the whole counsel of God.
20:35 how he said. This particular statement is not recorded in any of the four gospels, though it is certainly consistent with the teachings and actions of Christ (note, e.g., Luke 14:12). Probably Paul had learned of this statement directly by way of his contacts with Peter or one of the other apostles. In any case, its inclusion in Scripture marks it as of divine truth and authority.