From that time, &c. This commences the third period of the Lord's ministry, the subject of which is the rejection of Messiah. See App-119.
began, &c. This is stated four times (here, Matthew 17:22; Matthew 20:17; Matthew 20:28). See the Structure above; each time with an additional feature.
must. Note the necessity (Luke 24:26).
be raised again. Omit "again". Not the same word as in Matthew 17:9, but the same as in Matthew 17:23.
the third day. The first occurrence of this expression (canonically). See App-148.