John Mark
Mark 1:21BSB·traditional attribution

Then Jesus and His companions went to Capernaum, and right away Jesus entered the synagogue on the Sabbath and began to teach.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. A general account of Christ's preaching in Galilee. John gives an account of his preaching in Judea, before this (ch. 2 and 3), which the other evangelists had omitted, who chiefly relate what occurred in Galilee, because that was least known at Jerusalem. Observe, 1. When Jesus began to preach in Galilee; After that John was put in prison.

Commenting on Mark 1:14-22

John Gill Reformed Baptist @doctorgill

And they went into Capernaum,.... Jesus and his four disciples he had just called, Simon and Andrew, James and John; though the Arabic and Persic versions read, "he went"; that is, Christ; and so Beza says it was read in a certain copy: and straightway on the sabbath day he entered into the synagogue and taught; that is, immediately, as soon as he entered the...

Albert Barnes Presbyterian @notesbybarnes

Verses 21-27. See Verse 21. And they went into Capernaum. For the situation of Capernaum, see . Straightway. Immediately. On the following Sabbath. The synagogue. . And taught. In the synagogue, the presiding elder, after reading the Scriptures, invited any who chose to address the people, .