Jehuda, thou didst make confession in the matter of Tamar: therefore shall thy brethren confess thee, and shall be called Jehudain from thy name. Thy hand shall avenge thee of thy adversaries, in throwing arrows upon them when they turn their backs before thee; and the sons of thy fathers shall come before thee with salutations.
Why Judah's Confession Earned Him the Crown
Targum Pseudo-Jonathan on Genesis 49:8