We then that are strong - The apostle resumes the subject of the preceding chapter; and continues the exhortation to brotherly love and mutual kindness and forbearance. By the "strong" here he means the strong "in faith" in respect to the matters under discussion; those whose minds were free from doubts and perplexities. His own mind was free from doubt, and there were many others, particularly of the Gentile converts, that had the same views. But many also, particularly of the "Jewish" converts, had many doubts and scruples.

Ought to bear - This word bear properly means to "lift up," to "bear away," to "remove." But here it is used in a larger sense; "to bear with, to be indulgent to, to endure patiently, not to contend with;" Galatians 6:2; Revelation 2:2, "Thou canst not bear them that are evil."

And not to please ourselves - Not to make it our main object to gratify our own wills. We should be willing to deny ourselves, if by it we may promote the happiness of others. This refers particularly to "opinions" about meats and drinks; but it may be applied to Christian conduct generally, as denoting that we are not to make our own happiness or gratification the standard of our conduct, but are to seek the welfare of others; see the example of Paul, 1 Corinthians 9:19, 1 Corinthians 9:22; see also Philippians 2:4; 1 Corinthians 13:5, "Love seeketh not her own;" 1 Corinthians 10:24, "Let no man seek his own, but every man another's wealth; also Matthew 16:24.

Romans 15:1 Parallel Commentaries

Two Fountains, one Stream
'That we, through patience and comfort of the Scriptures, might have hope.... 13. The God of hope fill you with all joy and peace in believing, that ye may abound in hope.'--ROMANS xv. 4, 13. There is a river in Switzerland fed by two uniting streams, bearing the same name, one of them called the 'white,' one of them the 'grey,' or dark. One comes down from the glaciers, and bears half-melted snow in its white ripple; the other flows through a lovely valley, and is discoloured by its earth. They …
Alexander Maclaren—Romans, Corinthians (To II Corinthians, Chap. V)

The Scripture a Necessity.
"For whatsoever things were written aforetime were written for our learning, that we through patience and comfort of the Scriptures might have hope."--Rom. xv. 4. That the Bible is the product of the Chief Artist, the Holy Spirit; that He gave it to the Church and that in the Church He uses it as His instrument, can not be over-emphasized. Not as tho He had lived in the Church of all ages, and given us in Scripture the record of that life, its origin and history, so that the life was the real substance …
Abraham Kuyper—The Work of the Holy Spirit

The Early History of Particular Churches.
A.D. 67-A.D. 500 Section 1. The Church of England. [Sidenote: St. Paul's visit to England.] The CHURCH OF ENGLAND is believed, with good reason, to owe its foundation to the Apostle St. Paul, who probably came to this country after his first imprisonment at Rome. The writings of Tertullian, and others in the second and third centuries speak of Christianity as having spread as far as the islands of Britain, and a British king named Lucius is known to have embraced the Faith about the middle of …
John Henry Blunt—A Key to the Knowledge of Church History