RobH_en_tn/mat/02/16.md

This continues the account of what happened when Jesus was born as the King of the Jews.

Then Herod

This describes what Herod did after Joseph fled to Egypt with Mary and Jesus. Herod does not die until Matthew 2:19.

he had been mocked

"the learned men had embarrassed him by tricking him" (see UDB)

He sent and killed all the male children

Alternative translation: "He gave orders to kill all the boys" or "He sent soldiers there to kill all the boy babies." (UDB)