For there is hope of a tree - We must not, says Calmet, understand this of an old tree, the stem and roots of which are dried up and rotted: but there are some trees which grow from cuttings, and some which, though pulled out of the earth, and having had their roots dried and withered by long exposure to the sun and wind, will, on being replanted, take root and resume their verdure. There are also certain trees, the fibres of which are so solid, that if after several years they be steeped in water, they resume their vigor, the tubes dilate, and the blossoms or flowers which were attached to them expand; as I have often witnessed in what is called the rose of Jericho. There are few trees which will not send forth new shoots, when the stock is cut down level with the earth.

that it will sprout

Job 14:14 If a man die, shall he live again? all the days of my appointed time will I wait, till my change come.

Job 19:10 He has destroyed me on every side, and I am gone: and my hope has he removed like a tree.

Isaiah 11:1 And there shall come forth a rod out of the stem of Jesse, and a Branch shall grow out of his roots:

Isaiah 27:6 He shall cause them that come of Jacob to take root: Israel shall blossom and bud, and fill the face of the world with fruit.

Daniel 4:15,23-25 Nevertheless leave the stump of his roots in the earth, even with a band of iron and brass, in the tender grass of the field...

Job's Question, Jesus' Answer
'If a man die, shall he live again?'--JOB xiv. 14. '... I am the resurrection, and the life: he that believeth in Me, though he were dead, yet shall he live: 26. And whosoever liveth and believeth in Me shall never die.'--JOHN xi. 25, 26. Job's question waited long for an answer. Weary centuries rolled away; but at last the doubting, almost despairing, cry put into the mouth of the man of sorrows of the Old Testament is answered by the Man of Sorrows of the New. The answer in words is this second …
Alexander Maclaren—Expositions of Holy Scripture

Whether There is to be a Resurrection of the Body?
Objection 1: It would seem that there is not to be a resurrection of the body: for it is written (Job 14:12): "Man, when he is fallen asleep, shall not rise again till the heavens be broken." But the heavens shall never be broken, since the earth, to which seemingly this is still less applicable, "standeth for ever" (Eccles. 1:4). Therefore the man that is dead shall never rise again. Objection 2: Further, Our Lord proves the resurrection by quoting the words: "I am the God of Abraham, and the God …
Saint Thomas Aquinas—Summa Theologica

Whether the Time of Our Resurrection Should be Delayed Till the End of the World?
Objection 1: It would seem that the time of the resurrection ought not to be delayed till the end of the world, so that all may rise together. For there is more conformity between head and members than between one member and another, as there is more between cause and effect than between one effect and another. Now Christ, Who is our Head, did not delay His resurrection until the end of the world, so as to rise again together with all men. Therefore there is no need for the resurrection of the early …
Saint Thomas Aquinas—Summa Theologica