וְיָצָ֥א חֹ֖טֶר מִגֵּ֣זַע יִשָׁ֑י וְנֵ֖צֶר מִשָּׁרָשָׁ֥יו יִפְרֶֽה׃
And there shall come forth a shoot out of the stock of Jesse, And a twig shall grow forth out of his roots.
Read kabbalistic (mystical) interpretation of Isaiah 11:1: and classical mystical sources.