13 You will arise and have compassion on Zion, for it is time to show favor to her; the appointed time has come.

Read Psalm 102:13 Using Other Translations

Thou shalt arise, and have mercy upon Zion: for the time to favour her, yea, the set time, is come.
You will arise and have pity on Zion; it is the time to favor her; the appointed time has come.
You will arise and have mercy on Jerusalem — and now is the time to pity her, now is the time you promised to help.