"'Say to him, "Be careful, keep calm and don't be afraid. Do not lose heart because of these two smoldering stubs of firewood - because of the fierce anger of Rezin and Aram and of the son of Remaliah."'" NIV translation
The Lord not only told Isaiah and his son where to go but gave him the exact words to share with the king. God reassures the king by describing those that are coming against His city as "smoldering stubs of firewood". That should be encouraging as something that is smoldering is on the way to dying and God is simply telling the king to trust in Him.
Through this time of trial, God presents King Ahaz with a simple choice of faith or fear. Trials are a normal part of the Christian life but they always present the same choice. Will you walk in faith or fear? Do you have a story to share of a time when you had to make this choice? Just as God sent Isaiah to encourage the king, your story could help someone else to stand strong in the face of trials.
"'Aram, Ephraim and Remaliah's son have plotted your ruin, saying, "Let us invade Judah; let us tear it apart and divide it among ourselves, and make the son of Tabeel king over it."'" NIV translation
God is continuing to give Isaiah the words to share with the king of Judah. God is not surprised by these enemies and their plans as He knows everything and demonstrates that knowledge by explaining their plan in detail. He also knows about the plans of the enemies in our lives and, if we have made that choice of faith over fear, we can be at peace.
"Yet this is what the Sovereign Lord says: 'It will not take place, it will not happen, for the head of Aram is Damascus, and the head of Damascus is only Rezin. Within sixty-five years Ephraim will be too shattered to be a people. The head of Ephraim is Samaria, and the head of Samaria is only Remaliah's son. If you do not stand firm in your faith, you will not stand at all.'" NIV translation
The Lord gives Isaiah the words to encourage Ahaz in the face of this trial. The plans that the enemies have made will not happen because they are the plans of men. He also warns Ahaz that he must either stand in his faith or fall completely.
This can be a reminder to us that we, too, must trust completely in God especially in the difficult times. This is a normal part of our growth as Christians as we see through the study in Nehemiah 3 and the meaning of the valley gate.