"visiting from house to house, meeting the people where they are. And if ministers of Christ have the graces of the Spirit, if they imitate the great Exemplar, they will find access to hearts and will win souls to Christ. Some ministers bearing the last message of mercy are too distant. They do not improve the opportunities that they have of gaining the confidence of unbelievers, by their exemplary deportment, their unselfish interest for the good of others, their kindness, forbearance, humbleness of mind, and their respectful courtesy. These fruits of the Spirit will exert a far greater influence than will the preaching in the desk without individual effort in families. But the preaching of pointed, testing truths to the people, and corresponding individual efforts from house to house to back up pulpit effort, will greatly extend the influence for good, and souls will be converted to the truth. 3T 233.1"
"And how I kept back nothing that was profitable unto you, but have shewed you, and have taught you publickly, and from house to house,"
EGW directly references the practice of teaching "from house to house" which is explicitly mentioned in Acts 20:20. She expands on the importance of this practice for ministers.