Judah is a lion's whelp: from the prey, my son, thou art gone up: he stooped down, he couched as a lion, and as an old lion; {h} who shall rouse him up?

(h) His enemies will so fear him.

Wesley's Notes

49:9 Judah is a lion's whelp - The lion is the king of beasts, the terror of the forest when he roars; when he seizeth his prey, none can resist him; when he goes up from the prey, none dares pursue him to revenge it. By this it is foretold that the tribe of Judah should become very formidable, and should not only obtain great victories but should peaceably enjoy what was got by those victories. Judah is compared not to a lion rampant, always raging but to a lion couching, enjoying the satisfaction of his success, without creating vexation to others.

Matthew Henry's Concise Commentary

49:8-12 Judah's name signifies praise. God was praised for him, chap. 29:35, praised by him, and praised in him; therefore his brethren shall praise him. Judah should be a strong and courageous tribe. Judah is compared, not to a lion raging and ranging, but to a lion enjoying the satisfaction of his power and success, without creating vexation to others; this is to be truly great. Judah should be the royal tribe, the tribe from which Messiah the Prince should come. Shiloh, that promised Seed in whom the earth should be blessed, that peaceable and prosperous One, or Saviour, he shall come of Judah. Thus dying Jacob at a great distance saw Christ's day, and it was his comfort and support on his death-bed. Till Christ's coming, Judah possessed authority, but after his crucifixion this was shortened, and according to what Christ foretold, Jerusalem was destroyed, and all the poor harassed remnant of Jews were confounded together. Much which is here said concerning Judah, is to be applied to our Lord Jesus. In him there is plenty of all which is nourishing and refreshing to the soul, and which maintains and cheers the Divine life in it. He is the true Vine; wine is the appointed symbol of his blood, which is drink indeed, as shed for sinners, and applied in faith; and all the blessings of his gospel are wine and milk, without money and without price, to which every thirsty soul is welcome. Isa 55:1.