NET
21 Then they went to Capernaum. When the Sabbath came, Jesus went into the synagogue and began to teach.
Darby
21 And they go into Capernaum. And straightway on the sabbath he entered into the synagogue and taught.
KJV
21 And they went into Capernaum; and straightway on the sabbath day he entered into the synagogue, and taught.