Book / 22 / 104 chapter - 7
Then the Lord said to Isaiah, “Go out now to meet Ahaz, you and Shear-Jashub your son (Isaiah 7:3)
Shear Jashub means a Remnant shall return. It was a prophetic name.
“If you will not believe surely you shall not be established” (Isaiah 7:9)
From this you can see that believing is very important. Believing the word is so important if we are to be established
Believe in the LORD your God, and you shall be established; believe His prophets, and you shall prosper." (2 Chronicles 20:20)
"Therefore the Lord Himself will give you a sign: Behold, the virgin shall conceive and bear a Son, and shall call His name Immanuel. (Isaiah 7:14)
This is a Messianic Prophecy concerning our Lord Jesus Christ who would be born through a Virgin called Mary.
The Lord also whistles (Isaiah 7:18)