The penitential supplication of Israel will lead to a thorough renewal of the nation, since the Lord will open to the penitent the fountain of His grace for the cleansing away of sin and the sanctifying of life. Zac 13:1. "In that day will a fountain be opened to the house of David, and to the inhabitants of Jerusalem, for sin and uncleanness." As the Lord Himself pours out the spirit of supplication upon Israel, so does He also provide the means of purification from sin. A fountain is opened, when its stream of water bursts forth from the bosom of the earth (see Isa 41:18; Isa 35:6). The water, which flows from the fountain opened by the Lord, is a water of sprinkling, with which sin and uncleanness are removed. The figure is taken partly from the water used for the purification of the Levites at their consecration, which is called מי חטּאת, sin-water, or alter of absolution, in Num 8:7, and partly from the sprinkling-water prepared from the sacrificial ashes of the red heifer for purification from the defilement of death, which is called מי נדּה, water of uncleanness, i.e., water which removed uncleanness, in Num 19:9. Just as bodily uncleanness is a figure used to denote spiritual uncleanness, the defilement of sin (cf. Psa 51:9), so is earthly sprinkling-water a symbol of the spiritual water by which sin is removed. By this water we have to understand not only grace in general, but the spiritual sprinkling-water, which is prepared through the sacrificial death of Christ, through the blood that He shed for sin, and which is sprinkled upon us for the cleansing away of sin in the gracious water of baptism. The blood of Jesus Christ cleanseth us from all sin (Jo1 1:7; compare Jo1 5:6).