Matius 2:3

2:3 When King Herod ¹  heard this he was alarmed, and all Jerusalem with him.

Matius 14:1

The Death of John the Baptist

14:1 At that time Herod the tetrarch ²  heard reports about Jesus,

[2:3]  ¹ sn See the note on King Herod in 2:1.

[14:1]  ² sn A tetrarch, a ruler with rank and authority lower than a king, ruled only with the approval of the Roman authorities. This was roughly equivalent to being governor of a region. Several times in the NT, Herod, tetrarch of Galilee, is called a king (Matt 14:9, Mark 6:14-29), reflecting popular usage rather than an official title.