Thomas Aquinas, on Rom 15:1

“Now we that are stronger, ought to bear the infirmities of the weak, and not to please ourselves.”

“The Apostle taught above that the stronger should avoid scandalizing the weak; here he teaches that the stronger should bear with the failings of the weak. In regard to this he does two things: first, he proposes an admonition; second, he clarifies it, at let every one of you. This admonition contains two parts: the first pertains to external behavior. Hence he says: not only should we avoid scandalizing the weak, but we who are stronger in faith ought to bear the infirmities of the weak. For as in a material edifice certain stronger material is selected to support the edifice's entire weight, upon which weaker material is set, as are the foundation and pillars, so in the spiritual edifice of the Church stronger men are not only chosen but made stronger to support the weight of the others. Hence it says in a psalm: I have strengthened its pillars (Ps 75:4) and in Galatians: bear one another's burdens (Gal 6:2). But the stronger support the failings of the weak, when they endure the shortcomings of the weak patiently and, so far as they can, try to help them. The second pertains to the internal intention. Hence it is said: and not to please ourselves, i.e., always desire the fulfillment of what pleases us, but we should condescend to the wills of others, so as to do what pleases them and is useful to them: just as I try to please all men in everything I do (1 Cor 10:33).”

Imported from an open dataset — not yet checked against the printed edition.