Here are some of the goings on regarding The Father's house in that future time of Christ's 1,000 years reign. Notice these following events are not... happy new heavens and a new earth timing. These events are about God's corrections upon His people and folks standing in judgment being disciplined. It's not a heavenly party at all, nor is it happening anywhere but on the earth:
Ezek 44:1-24
44:1 Then he brought me back the way of the gate of the outward sanctuary which looketh toward the east; and it was shut.
2 Then said the LORD unto me; "This gate shall be shut, it shall not be opened, and no man shall enter in by it; because the LORD, the God of Israel, hath entered in by it, therefore it shall be shut.
3 It is for the prince; the prince, he shall sit in it to eat bread before the LORD; he shall enter by the way of the porch of that gate, and shall go out by the way of the same."
Ezekiel is brought to the east gate of the Sanctuary, and it was shut. Because God entered through this gate, no man shall enter in by it. It shall be kept shut.
4 Then brought he me the way of the north gate before the house: and I looked, and, behold, the glory of the LORD filled the house of the LORD: and I fell upon my face.
Ezekiel is brought to the north gate before the House. God's Glory filled the House and Ezekiel fell on his face in worship.
5 And the LORD said unto me, "Son of man, mark well, and behold with thine eyes, and hear with thine ears all that I say unto thee concerning all the ordinances of the house of the LORD, and all the laws thereof; and mark well the entering in of the house, with every going forth of the sanctuary.
God prepares Ezekiel to give His Message to the rebellious of the house of Israel. This should reveal to you that this is a time of correction upon God's people, not some event of floating off in the clouds to make merry.
6 And thou shalt say to the rebellious, even to the house of Israel, Thus saith the Lord GOD; O ye house of Israel, let it suffice you of all your abominations,
7 In that ye have brought into My sanctuary strangers, uncircumcised in heart, and uncircumcised in flesh, to be in My sanctuary, to pollute it, even My house, when ye offer My bread, the fat and the blood, and they have broken My covenant because of all your abominations.
8 And ye have not kept the charge of Mine holy things: but ye have set keepers of My charge in My sanctuary for yourselves.
9 Thus saith the Lord GOD; No stranger, uncircumcised in heart, nor uncircumcised in flesh, shall enter into My sanctuary, of any stranger that is among the children of Israel.
To the rebellious leaders of the house of Israel, God rebukes them for allowing the unholy and profane to continue in God's House to pollute it, and it involves following abominations God does not approve of. Can you guys think of any abominations going on in some of Christ's Church today?
10 And the Levites that are gone away far from Me, when Israel went astray, which went astray away from Me after their idols; they shall even bear their iniquity.
11 Yet they shall be ministers in My sanctuary, having charge at the gates of the house, and ministering to the house: they shall slay the burnt offering and the sacrifice for the people, and they shall stand before them to minister unto them.
The Levites, the priests, who went astray when Israel went astray to idols, will bear their iniquity. That's about the priests which allowed Israel to go astray into Baal worship during THIS present world. This is about a time of correction for these during Christ's reign with His elect with "a rod of iron."
Notice these Levites (priests) are still going to be involved the goings on in God's House though, as they will be in charge of the gates, and ministering to the house, and minister before the people.
12 Because they ministered unto them before their idols, and caused the house of Israel to fall into iniquity; therefore have I lifted up Mine hand against them, saith the Lord GOD, and they shall bear their iniquity.
13 And they shall not come near unto Me, to do the office of a priest unto Me, nor to come near to any of My holy things, in the most holy place: but they shall bear their shame, and their abominations which they have committed.
14 But I will make them keepers of the charge of the house, for all the service thereof, and for all that shall be done therein.
Again, God will rebuke those priests that allowed the house of Israel to stray during this present world. Their punishment will be the menial duties of His House, and not being allowed to approach Christ in His Presence during that time.
15 But the priests the Levites, the sons of Zadok, that kept the charge of My sanctuary when the children of Israel went astray from Me, they shall come near to Me to minister unto Me, and they shall stand before Me to offer unto Me the fat and the blood, saith the Lord GOD:
16 They shall enter into My sanctuary, and they shall come near to My table, to minister unto Me, and they shall keep My charge.
These priests represent Christ's elect saints who will reign with Him during this time on earth. The name Zadok means 'The Just' or The Righteous, and Jesus is our King of Righteousness. These are allowed to approach Christ in His direct Presence in that time, and serve Him at His table. No others will be allowed.
In the Rev.3 Scripture there is a time marker to this event when Jesus said He will make those of the synagogue of Satan to come worship Him at the feet of His elect, so they will know that He loves His elect. The wicked will be made to come up to Jerusalem and worship Jesus from year to year, we are shown at the end of Zechariah 14.
17 And it shall come to pass, that when they enter in at the gates of the inner court, they shall be clothed with linen garments; and no wool shall come upon them, whiles they minister in the gates of the inner court, and within.
18 They shall have linen bonnets upon their heads, and shall have linen breeches upon their loins; they shall not gird themselves with any thing that causeth sweat.
19 And when they go forth into the utter court, even into the utter court to the people, they shall put off their garments wherein they ministered, and lay them in the holy chambers, and they shall put on other garments; and they shall not sanctify the people with their garments.
20 Neither shall they shave their heads, nor suffer their locks to grow long; they shall only poll their heads.
21 Neither shall any priest drink wine, when they enter into the inner court.
22 Neither shall they take for their wives a widow, nor her that is put away: but they shall take maidens of the seed of the house of Israel, or a widow that had a priest before.
These Zadok will wear linen, and will not minister to the people in their holy linens they approach Christ with. Their hair will be neat and clean cut, nor drink wine while performing their duties.
23 And they shall teach My people the difference between the holy and profane, and cause them to discern between the unclean and the clean.
24 And in controversy they shall stand in judgment; and they shall judge it according to My judgments: and they shall keep My laws and My statutes in all Mine assemblies; and they shall hallow My sabbaths.
KJV
This is what those of God's people who strayed will be under during that 1,000 years, which is a time of great teaching and correction. Christ's elect priests will teach them the difference between the unclean and the clean, the holy and the profane, and in controversy will the people stand in judgment the whole 1,000 years period. In that time God's laws shall be kept and all His sabbaths shall be hallowed.
These are events that are to begin with Christ's 2nd coming back to Jerusalem as written.