In Isaiah seven we have a direct word form the Lord to Ahaz, then king of Judah, also descendant of the line of David. It is his Ahaz’s unbelief that strikes the tone for the context in his refusal to trust God and look to as well as fear Assyria. Therefore the Lord declares that He will give a sign in order to clearly show that God reigns and is not slack in caring for His chosen people, even in their unbelief. The question regarding Isaiah 7:14 is whether it is a prophecy referring strictly to Ahaz’s time, or it is a prophecy referring solely to Christ. Or, is it a combination in that the prophecy was partially fulfilled in Ahaz’s time and finally, or fully, fulfilled with Christ. These options will each be briefly considered and then shown why fulfillment of Isa. 7:14 was strictly a prophecy fulfilled in Jesus Christ, Immanuel, God with us.
We can quickly conclude, simply relying on the guidance of the Holy Spirit upon New Testament writers that this prophecy is not strictly contained to Ahaz’s time. Matt. 1:22 clearly states that all this took place to fulfill what was spoken about in Isa. 7:14. The scriptures being inerrant and inspired by God (2 Peter 3:16), it is therefore logical to conclude that Isa. 7 was in fact a prophecy from God spoken through the prophet Isaiah finding fulfillment in Christ. To deny fulfillment in Christ would be to deny the authority of the New Testament as scripture.
So then the question now becomes one of perspective. When Isaiah was proclaiming this prophecy, was it intended for fulfillment solely in Christ or was is partially fulfilled with Ahaz’s immediate lineage, Hezekiah, and later fulfilled with Christ? Many commentators contend that Isaiah was predicting the birth of a boy named Immanuel in Ahaz’s time citing both the Hebrew ‘almah’ and the Greek in Matt 1, pleroo[i]. Discussion on the word almah hinges on whether it strictly means virgin or can it be interpreted as young woman. If it means young woman and not virgin then the implication could be that vs. 14 is partially confined to Ahaz’s situation making Isaiah not fully aware of the fulfillment Christ would give to his prophecy but causing Isaiah’s eyes to be veiled in a sense to the final fulfillment of vs. 14[ii]. Thus allowing the prophet only to perceive the immediate time frame of God’s words and cast his eyes to the young woman Abijah bath-Zechariah[iii].
The view then that vs. 14 finds its fulfillment in only Christ I think best fits the context of this section in Isaiah. The word almah may refer to a virgin and most likely does in this context supposing that Immanuel is really God Himself, or so the name implies. If this is true, then the birth of El, that is God, must be of a miraculous nature in keeping with Isaiah’s promise of a sign[iv]. But what then of vs. 15 and 16 if Christ is the restricted means of fulfillment? Christ as God is not restricted to temporal limitations but is very capable of transcending time through His eternality and therefore being apart of, in a real way, a time period before He has come to Earth as a physical person[v]. The fulfillment of vs. 14-16 can still be attributed to Christ in that His eternal presence in Israel’s history, though veiled, satisfies the need for an immediate fulfillment. This also lends to reading Matt 1:22 as a natural and comfortable understanding of what the Spirit through both Isaiah and Matthew was pointing to, Jesus Christ.
The hope that a Messiah, God Himself, would be given as promise of hope, even in light of the total destruction and annihilation of Israel due to her unbelief, and that those who through faith submitted to this future hope would be saved, this may be reason enough for the prophecy to be given such a long time before it ever became fulfilled. Regardless of Ahaz and his poor accountability before the Lord, God was still giving hope for a Messiah that could save and redeem.
[i] Beyer, Brian. Encountering the Book of Isaiah. Pg 74. The Greek word Pleroo is described here as having both the understanding of fulfillment but also the understanding of a secondary fulfillment, or “a filling full fulfillment.” If this is the case than Matt 1:22 is evidence that Isa. 7:14 should be understood as being fulfilled both then and in Christ.
[ii] Keil & Delitzsch. Commentary on the Book of Isaiah. Pg 142-145.
[iii] Keil & Delitzsch. Commentary on the Book of Isaiah. Pg 141. Keil and Delitzsch point out that this conjecture is very probable in that historically, the majority of believing Israel put their hopes in Hezekiah as the Messiah, but in light of chapter 9 of Isaiah, proclaiming that Immanuel will be “God in corporeal self-manifestation, and therefore a ‘wonder’ as being a superhuman person,(pg 143 of Keil)” coupled with the actual account of Hezekiah still awaiting the day of the Messiah, than it is safe to conclude that Isa 7:14 is not looking immediately in time for fulfillment but ultimately in Christ, the real God-Man.
[iv] Keil & Delitzsch. Commentary on the Book of Isaiah. Pg 143.
[v] Keil & Delitzsch. Commentary on the Book of Isaiah. Pg 147. “When Isaiah speaks of Immanuel as eating thickened milk and honey, like all who survived the Assyrian troubles in the Holy Land; he evidently looks upon and sees the childhood of Immanuel as connected with the time of the Assyrian calamities. And it was in such a perspective combination of events lying far apart, that the complex character of prophecy consisted. For the things which the prophet saw in combination were essentially connected, even though chronologically separated. When he spoke of the son of the virgin as growing up in the midst of the Assyrian oppressions; this also was true, that Jesus was really born at a time when the Holy Land, deprived of its previous abundance, was under the dominion of the imperial power, and in a condition whose primary cause was to be traced to the unbelief of Ahaz. Moreover, He who became flesh in the fullness of time did really lead an ideal life in the Old Testament History. He was in the midst of it in a pre-existent presence, moving on towards the covenant goal. The fact that the house and nation of David did not perish in the Assyrian calamities, was actually to be attributed, as chapter 8 presupposes, to His real though not His bodily presence. In this way the apparent discrepancy between the prophecy and the history of the fulfillment may be solved.”