Zechariah 13:1

“On that day a fountain will be opened to the house of David and the people of Jerusalem, to cleanse them from sin and impurity.
BSB · Berean Standard Bible
In that day there shall be a fountain opened to the house of David and to the inhabitants of Jerusalem for sin and for uncleanness.

Note uncleanness: Heb. separation for uncleanness

KJV · King James Version
“In that day there will be a fountain opened to David’s house and to the inhabitants of Jerusalem, for sin and for uncleanness.
WEB · World English Bible
In that day there shall be a fountain opened to the house of David and to the inhabitants of Jerusalem, for sin and for uncleanness.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

that,
Zechariah 12:3, 8, 11
a fountain,
Job 9:30, 31; Psalm 51:2, 7; Isaiah 1:16–18; Ezekiel 36:25; John 1:29; John 19:34, 35; 1 Corinthians 6:11; Ephesians 5:25–27; Titus 3:5–7; Hebrews 9:13, 14; 1 John 1:7; 1 John 5:6; 1 Peter 1:19; Revelation 1:5, 6; Revelation 7:13, 14
the house
Zechariah 12:7, 10
uncleanness
Heb. separation for uncleanness.
Leviticus 15:2–33; Numbers 19:9–22; Ezekiel 36:17, 29