The Philippians are fighting the same battle they saw Paul fight earlier in Philippi. Acts 16:11–40 tells of the difficulties Paul encountered in Philippi. In 1 Thessalonians 2:2 he mentions the beatings and insults he endured in Philippi. Paul still suffers for Christ. After all, he is in jail. Thus, Paul encourages them. He and the Philippians fight the same battle together and they suffer together for Christ.
30 en soutenant le même combat que vous m'avez vu soutenir, et que vous apprenez maintenant que je soutiens encore.