Matthew 2:19

But when Herod was dead, behold, an angel of the Lord appeareth in a dream to Joseph in Egypt, saying ...

But when Herod was dead, ... That is God's answer to men who oppose His will. Through all the universe, one mighty purpose runs; and no man or combination of men or nations can thwart that will. BUT ... God's will must be done. A similar example of this same principle may be noted in Acts 12:23,34 where it is said of another Herod who opposed God's will that "He was eaten of worms ... but the word of God grew and multiplied."