the Stem of Jesse: Jesus

Is. 11:1 "1 And there shall come forth a rod out of the stem of Jesse, and a Branch shall grow out of his roots: 2 And the spirit of the LORD shall rest upon him, the spirit of wisdom and understanding, the spirit of counsel and might, the spirit of knowledge and of the fear of the LORD; 3 And shall make him of quick understanding in the fear of the LORD: and he shall not judge after the sight of his eyes, neither reprove after the hearing of his ears: 4 But with righteousness shall he judge the poor, and reprove with equity for the meek of the earth: and he shall smite the earth with the rod of his mouth, and with the breath of his lips shall he slay the wicked. 5 And righteousness shall be the girdle of his loins, and faithfulness the girdle of his reins."

Isaiah wants his audience to know that judgment is coming upon Israel, Assyrians and they wound get what was coming to them. The messiah would one day come though Jesse's line. Jesus `should remind them of the hope they had from God of a remnant surviving the judgement.