Mark 1:21

Καὶ εἰσπορεύονται εἰς Καπερναούμ· καὶ εὐθεὼς τοῖς σάββασιν εἰσελθὼν εἰς τὴν συναγωγὴν, ἐδίδασκε.

And they went into Capernaum; and immediately on the Sabbath he entered into the synagogue, he taught.