The phrase "in that time" means the same thing as, and intensifies the phrase "In those days." Alternate translation: "In those very days" or "At that very time" (See: [[rc://en/ta/man/translate/figs-doublet]])
Yahweh speaks of a descendant of David as if he were a branch off of a tree trunk. Alternate translation: "I will cause a righteous man to come from and bring glory to the line of David" (See: [[rc://en/ta/man/translate/figs-metaphor]])