en_tn_condensed/mat/09/03.md

Behold

This marks the beginning of another event in the larger story. It may involve different people than the previous events. Your language may have a way of doing this.

said among themselves

Possible meanings are 1) each one was thinking to himself, or 2) they were speaking among themselves.

blaspheming

The scribes thought that Jesus was insulting God because he claimed do something that only God can do.