1 Thessalonians 3:1-3

v1: Church leaders will willingly make sacrifices for the good of those they are responsible for taking care of. "Ministers who cannot deny themselves in many things for the establishment and welfare of their people do not value their people properly."

v2: We always will have the need of being strengthened and encouraged in our faith.  Firstly, concerning the object of our faith, that "Jesus Christ is the Saviour of the world" and that he is "so wise and good and so powerful and faithful that [we] can rely on him." Secondly, concerning the reward of our faith, which is more than enough to counterbalance all the losses we experience in this life.

v3: Trials and persecution can be unsettling for us as believers, and cause us to waver in the faith, even give up following Jesus.  This is why we need to be regularly strengthened and encouraged to keep believing the gospel.