One Kingdom

How many spiritual kingdoms are there on earth?
Only one.
The kingdom of Satan.
This means there can be no fence sitters as there is no fence between God and Satan's kingdom to sit on.

This means that no matter what you do you will either serve the Kingdom of God or the kingdom of Satan. It can only serve one or the other even if only by inaction in doing the things of God.
Every action you do can only serve one kingdom or the other.
Thus the importance of listening to The Holy Spirit so that whatever you do serves the Kingdom of God.
It also means that around us is Satan's kingdom with all he has set up in it to take us away from Jesus so that you need to know how to recognize an attack of his as well as now to deal with it.

This means we need to be guided by The Holy Spirit so that you are not unawares of the traps Satan has set for us.
Do you listen to the guidance of The Holy Spirit?
If not, how do you know which kingdom you are serving by what you are doing?
Do you know how Satan attempts to trap you for his kingdom?
If not, then how do you know when he is attacking you?
Perhaps if Christians knew how to be guided by The Holy Spirit and how Satan attacks them then the church would not be in the mess it is in today where it says it does God's work and are a follower of Him but will have 80% (according to Jesus) left behind in the rapture because they really do not know Christ in a personal intimate way and are not doing His work but the work of the denomination.
Satan attacks Christians through denominations by having them not teach these things so that the people are ignorant of them. They do what is correct according to the denomination but it is not necessarily what God desires them to do.
So who are you being led by?
A denomination or The Holy Spirit.

So you say your denomination is part of the kingdom and preaches it? I am glad that:

It works with other churches (you are all part of My of Body) and shares the resources I have given you with others in My Body
It teaches you how to evangelize in daily life as well as how to defend the Gospel
It teaches you how to defeat Satan, deliver people from his effects on them as well as how to defend Me and My Kingdom
Its preaching shows you how to deepen the intimate salvation relationship you have with The Father, Myself and The Holy Spirit
It teaches you about hell, Satan, how to he attacks and how to defeat against his attacks
It teaches you to be a good steward of all The Father gives you to care for me which He still owns as you are only a steward of it.
It does not pay others to do what you should be doing
It teaches you how to increase your faith and show God's Quality of Love in all you and develop the holiness you need to be able to serve Me
It teaches you how to express The Fruit of The Holy Spirit which is how My Love is expressed to all.
It teaches you to do all these out of love and appreciation for all I have done for you are doing and will do for you and teaches these what they are so you can appreciate them. After all Christianity is the expression of the love relationship you have with The Father, Me and The Holy Spirit
It teaches you what your giftings are and how to use them for My Kingdom and not just the denomination or church
It teaches you how to be guided by The Holy Spirit in your daily life
It teaches you how to deepen the intimate salvation relationship you have with each of us and how to communicate too and hear us on a constant basis so you can be guided, encouraged and helped by our interaction with you

You are fortunate
If they are not doing any of the above what are they teaching that matures you into My Character and/or promotes or defends My Kingdom???
Jesus