What does the Bible say about the fountain opened in Zechariah 13:1?

Zechariah 13:1 prophesies about a fountain that will be opened for the house of David and the inhabitants of Jerusalem, addressing both sin and uncleanness. This fountain symbolizes the atoning sacrifice of Jesus Christ, the Lamb of God, whose blood is necessary for the forgiveness of sins. The fountain signifies God's provision for sin and the need for cleansing, fulfilling the requirements for approaching a holy God. Without this fountain, no one can come to God, as He remains just and holy, and cannot overlook sin.