Then - At the time of this great restoration - will I sprinkle clean water upon you - the truly cleansing water; the influences of the Holy Spirit typified by water, whose property it is to cleanse, whiten, purify, refresh, render healthy and fruitful.

From all your filthiness - From every sort of external and internal abomination and pollution.

And from all your idols - False gods, false worship, false opinions, and false hopes.

Will I cleanse you - Entirely separate you.

will I

Leviticus 14:5-7 And the priest shall command that one of the birds be killed in an earthen vessel over running water...

Numbers 8:7 And thus shall you do to them, to cleanse them: Sprinkle water of purifying on them, and let them shave all their flesh...

Numbers 19:13-20 Whoever touches the dead body of any man that is dead, and purifies not himself, defiles the tabernacle of the LORD...

Psalm 51:7 Purge me with hyssop, and I shall be clean: wash me, and I shall be whiter than snow.

Isaiah 52:15 So shall he sprinkle many nations; the kings shall shut their mouths at him: for that which had not been told them shall they see...

John 3:5 Jesus answered, Truly, truly, I say to you, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God.

Titus 3:5,6 Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration...

Hebrews 9:13,14,19 For if the blood of bulls and of goats, and the ashes of an heifer sprinkling the unclean, sanctifies to the purifying of the flesh...

Hebrews 10:22 Let us draw near with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience...

1 John 5:6 This is he that came by water and blood, even Jesus Christ; not by water only, but by water and blood...

filthiness

Ezekiel 36:17,29 Son of man, when the house of Israel dwelled in their own land, they defiled it by their own way and by their doings...

Ezekiel 37:23 Neither shall they defile themselves any more with their idols, nor with their detestable things, nor with any of their transgressions...

Psalm 51:2 Wash me thoroughly from my iniquity, and cleanse me from my sin.

Proverbs 30:12 There is a generation that are pure in their own eyes, and yet is not washed from their filthiness.

Isaiah 4:4 When the Lord shall have washed away the filth of the daughters of Zion...

Jeremiah 33:8 And I will cleanse them from all their iniquity, whereby they have sinned against me; and I will pardon all their iniquities...

Zechariah 13:1 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.

Acts 22:16 And now why tarry you? arise, and be baptized, and wash away your sins, calling on the name of the Lord.

1 Corinthians 6:11 And such were some of you: but you are washed, but you are sanctified, but you are justified in the name of the Lord Jesus...

2 Corinthians 7:1 Having therefore these promises, dearly beloved, let us cleanse ourselves from all filthiness of the flesh and spirit...

Ephesians 5:26,27 That he might sanctify and cleanse it with the washing of water by the word...

Titus 2:14 Who gave himself for us, that he might redeem us from all iniquity, and purify to himself a peculiar people, zealous of good works.

1 John 1:7 But if we walk in the light, as he is in the light, we have fellowship one with another...

Revelation 1:5 And from Jesus Christ, who is the faithful witness, and the first begotten of the dead, and the prince of the kings of the earth...

Revelation 7:14 And I said to him, Sir, you know. And he said to me, These are they which came out of great tribulation, and have washed their robes...

from all your idols

Isaiah 2:18-20 And the idols he shall utterly abolish...

Isaiah 17:7,8 At that day shall a man look to his Maker, and his eyes shall have respect to the Holy One of Israel...

Jeremiah 3:22,23 Return, you backsliding children, and I will heal your backslidings. Behold, we come to you; for you are the LORD our God...

Hosea 14:3,8 Asshur shall not save us; we will not ride on horses: neither will we say any more to the work of our hands, You are our gods...

Zechariah 13:2 And it shall come to pass in that day, said the LORD of hosts, that I will cut off the names of the idols out of the land...

The Holy Nation
'Then will I sprinkle clean water upon you, and ye shall be clean: from all your filthiness, and from all your idols, will I cleanse you. 26. A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh. 27. And I will put My Spirit within you, and cause you to walk in My statutes, and ye shall keep My judgments, and do them. 28. And ye shall dwell in the land that I gave to your fathers; and …
Alexander Maclaren—Expositions of Holy Scripture

Let Your Hearts be Much Set on Revivals of Religion. ...
Let your hearts be much set on revivals of religion. Never forget that the churches have hitherto existed and prospered by revivals; and that if they are to exist and prosper in time to come, it must be by the same cause which has from the first been their glory and defence.--Joel Hawes If any minister can be satisfied without conversions, he shall have no conversions.--C. H. Spurgeon I do not believe that my desires for a revival were ever half so strong as they ought to be; nor do I see how a minister …
E.M. Bounds—Purpose in Prayer

God Has Everything to do with Prayer
Christ is all. We are complete in Him. He is the answer to every need, the perfect Savior. He needs no decoration to heighten His beauty, no prop to increase His stability, no girding to perfect His strength. Who can gild refined gold, whiten the snow, perfume the rose or heighten the colors of the summer sunset? Who will prop the mountains or help the great deep? It is not Christ and philosophy, nor Christ and money, nor civilization, nor diplomacy, nor science, nor organisation. It is Christ alone. …
Edward M. Bounds—The Reality of Prayer