By the use of the narrative present tense, they enter Capernaum,
the narrator emphasizes that their arrival in this city is something new (Mark 2:1 mentions another visit to the city). Hence it is surprising that Jesus immediately
(eutheos) enters the synagogue to teach in this unknown city. He does not wait to be invited. He comes as herald, and thus proclaims the gospel in Galilee (Mark 1:14) and now also in Capernaum.1
21 Ils se rendirent à Capernaüm. Et, le jour du sabbat, Jésus entra d'abord dans la synagogue, et il enseigna.