Zephaniah 3:16

14 Sing, O daughter of Zion; shout, O Israel; be glad and rejoice with all the heart, O daughter of Jerusalem.

15 The LORD hath taken away thy judgments, he hath cast out thine enemy: the king of Israel, even the LORD, is in the midst of thee: thou shalt not see evil any more.

In that day it shall be said to Jerusalem, Fear thou not: and to Zion, Let not thine hands be slack.

17 The LORD thy God in the midst of thee is mighty; he will save, he will rejoice over thee with joy; he will rest in his love, he will joy over thee with singing.

18 I will gather them that are sorrowful for the solemn assembly, who are of thee, to whom the reproach of it was a burden.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
On that day they will say to Jerusalem: “Do not fear, O Zion; do not let your hands fall limp.
KJV
In that day it shall be said to Jerusalem, Fear thou not: and to Zion, Let not thine hands be slack.
WEB
In that day, it will be said to Jerusalem, “Don’t be afraid, Zion. Don’t let your hands be weak.”
ASV
In that day it shall be said to Jerusalem, Fear thou not; O Zion, let not thy hands be slack.
DARBY
In that day it shall be said to Jerusalem, Fear not; Zion, let not thy hands be slack.
BLB
On that day it will be said to Jerusalem: “Do not fear, O Zion, do not let your hands be slack!
ÅB
På den dag skal det sies til Jerusalem: Frykt ikke! Sion, la ikke dine hender synke!
OTB
På den dagen skal det bli sagt til Jerusalem:
“Vær ikke redd, Sion;
La ikke dine hender bli svake.
B1930
På den dag skal det sies til Jerusalem: Frykt ikke! Sion, la ikke dine hender synke!

Study notes (Tyndale)

Original text and word study

Cross references