The prophet Isaiah was surely the greatest “Christmas Prophet” of the Old Testament. Let us briefly consider two of his most famous Christmas sermons.
Isaiah Chapter 7
One of the great marvels surrounding Jesus’ birth was the fact of His virgin conception.
But how could a virgin be with child and bear a son? Luke explains: “The Holy Spirit will come upon you [Mary], and the power of the Highest will overshadow you; therefore, also, that Holy One who is to be born will be called the Son of God” (Luke 1:35, NKJV). Was this impossible? No, “For with God nothing will be impossible” (Luke 1:37).
Not only was it not impossible, it was predicted 700 years before by Isaiah. He received the message that Christ, the Messiah, would be one Person with two natures—divine and human.