Strong's Concordance G198

Mat 2:7  Then Herod, when he had privily called the wise men, enquiredG198 of them diligentlyG198 what time the star appeared.

Mat 2:16  ¶ Then Herod, when he saw that he was mocked of the wise men, was exceeding wroth, and sent forth, and slew all the children that were in Bethlehem, and in all the coasts thereof, from two years old and under, according to the time which he had diligently enquiredG198 of the wise men.