## to testify to you ##

Here "you" is plural.

## root and descendant of David ##

The words "root" and "descendant" mean basically the same thing. They emphasize that Jesus belongs to the family of David. (See: [[rc://en/ta/man/translate/figs-explicit]] and [[rc://en/ta/man/translate/figs-doublet]]).

## the bright Morning Star ##

This refers to the bright star that appears early in the morning and indicates that daylight is coming soon. This also represents Jesus as the Messiah. (See: [[rc://en/ta/man/translate/figs-metaphor]])