Well, I believe that true Christians DO agree on the core Gospel and share the same HS (1Cor. 13:13, Eph. 4:4-6),
but they may be in different denominations and churches due to various factors including driving distance and
preference regarding worship service styles.
This is why I urge agreement regarding a core creed, such as this one:
The normative way of stating God's core condition for salvation in the NT is “Accept Christ Jesus as Lord”
(as in Acts 16:31, 2Cor. 4:5 & Col. 2:6) or “Love Jesus as Messiah and Lord” (John 8:42). The main points of
Christian orthodoxy implicit in these statements can be explained or elaborated as follows:
1. There is a/one all-loving and just Lord or God (Deut. 6:4, John 3:16, 2Thes. 1:6), who is both able (2Tim. 1:12) and willing (1Tim. 2:3-4, Ezek. 33:11) to provide all morally accountable human beings salvation or heaven—a wonderful life full of love, joy and peace forever.
2. Human beings are selfish or sinful (Rom. 3:23, 2Tim. 3:2-4, Col. 3:5), miserable (Gal. 5:19-21), and hopeless (Eph. 2:12) or hell-bound at the judgment (Matt. 23:33 & 25:46) when they reject God’s salvation (John 3:18, Rom. 2:5-11).
3. Jesus is God’s Messiah/Christ and incarnate Son, the way that God has chosen (John 3:16, Acts 16:30-31, Phil. 2:9-11) of providing salvation by means of his atoning death on the cross for the payment of the penalty for the sins of humanity (Rom. 3:22-25 & 5:9-11), followed by his resurrection to reign in heaven (1Cor. 15:14-28).
4. Thus, every person who hears the NT Gospel needs to repent and accept God’s justification in Jesus as Christ/Messiah the Lord or Supreme Commander (Luke 2:11, John 14:6, Acts 16:31), which means trying to obey (Phil. 3:12, 1John 1:8) His commandment to love one another (Matt. 22:37-40, John 13:35, Rom. 13:9)—forever (Matt. 10:22, Psa. 113:2).
5. Then God’s Holy Spirit will establish a saving relationship with those who freely accept Him (Rev. 3:20) that will eventually achieve heaven when by means of persevering in learning Truth/God’s Word/sanctification everyone cooperates fully with His will (John 14:6, 17&26, Rom. 8:6-17, Gal. 6:7-9, Eph. 1:13-14, Heb. 10:36, 12:1, Jam. 1:2-4).
Do you agree?
I believe this represents the norm in today's Christianity. Skip the necessary process and jump right to the core. What has to be believed. While all the 10,000 non-Christian belief groups, and all the 45,000 different "Christian" belief groups focus almost strictly on the core beliefs that prove they, and others love truth and have the truth when it comes to their core beliefs, every group evaluating based on their own beliefs, all 55,000 of them always do so by evaluating based on the alignment of other with their own beliefs, and the accepted data and interpretations they believe prove their beliefs true and all opposing beliefs false.
Everyone, in every belief group always passes their own test of loving truth and believing the truth, making it absolutely worthless for determining who loves and has truth. Everyone does. Of course, God says those evaluating love of truth and belief in truth based on their own beliefs, and those of the experts who agree with them, have absolutely no understanding at all.
2Co. 10:12 It's why a profession of faith is worthless for determining who is, and isn't, "in the faith". Although all true Christians are constantly evaluating the salvation of themselves and others,
2Co. 13:5-6, "Unless indeed they fail the test",
vs. 5 Jesus warns true Christians to only evaluate based on ongoing habitual "Fruits". And no true Christian can ever possess the "Fruits" of the person who believes they are a Christian, but fails the "Fruits" test, and no person who fails the tests can ever possess those of the people who will be saved.
Mat. 7:15-20
Interestingly, most agree that the "Narrow Gate" leading to life is saving faith in the truth. This would make the very broad gate every other belief on the planet. This would make the "Fruits" that are the ongoing "Path of tribulation"
Mat. 7:14 (The consistent meaning for the word Thlebo throughout the Greek old and New Testaments: The Great "Tribulation", for example.) those that will get anyone "From" the erroneous beliefs in any of the 55,000 different belief groups, "to" truth, ... eventually... if they never stop the process. The good news is, if we never stop seeking, knocking, asking, ... till the day we die, (Present Tense) we are guaranteed, by God Himself, to get to saving faith in the truth and receiver the Holy Spirit ... eventually.
Mat. 7:7-12/Luk. 11:9-13(vs. 13).
The broad, easy way is to get the beliefs, data and interpretations every belief group shares, select one of the 45,000 "Christian" belief groups and get on with living. After all, any group we are in, and any set of experts who agree with us, has the correct core beliefs, right?
So, what ongoing habitual "Fruits" lock 99% of all people into the beliefs they love "as" truth? That's the broad path. What habitual ongoing "Fruits" will get anyone, regardless of the beliefs they have now, "From" erroneous beliefs "to" truth ... eventually, if they never stop. (Because God is seeking, and will never stop seeking, that group.
Joh. 4:23-24) Those who have rejected a love of the truth, God is no longer seeking. He gives them everything they need to hold fast to their beliefs, including all the original signs and wonders the true Christians of the 1st century possessed.
Mat. 7:23-24
While almost everyone is focused only on the "Gate", no person on the planet can get to the "Narrow Gate to Life" if they aren't on the correct path. They are perishing. They are not saved,
2Th. 2:10 regardless of their intense beliefs, their zeal for God in accordance with those beliefs, ... and even if the correct gospel is set up flawlessly right before their very eyes, they cannot even see it, let alone believe it.
2Co. 4:3-4
The question isn't what beliefs are required for saving faith. The question is, what beliefs will result in us getting "From" erroneous beliefs "to" truth ... eventually, if we never stop the process. Fruits ... continuously evaluating the salvation of ourselves and others
2Co. 13:5-6 based on ongoing "Fruits"
Mat. 7:15-20 and not beliefs
2Co. 10:12 "Unless indeed you fail the test".
2Co. 13:5 Continuously seeking, knocking, asking, and never stopping till the day we die.
1Th. 5:21 Those who already have the truth / unquestionably true core beliefs, already believe they have found, have had it opened to them, and have received. As far as their core beliefs go, they are done. They have everything they need.
2Th. 2:11
If you have tasted that the Lord is gracious, there is no possible way ANYONE is going to be able to keep you from studying through all the bible has to say
1Pe. 2:2-3 with the goal of getting to the truth of it so you can alter all you are to fit. There is no passage on "Reading" or "Memorizing" the bible. "Accurately dissecting" all of it so you do not stand ashamed, but rather stand approved, before Him,
2Ti. 2:15 yes. Reading ... no. Same with everything almost everyone in the 45,000 different belief groups do ... showing up for bible studies, praise and worship, ... if everyone does it, it's not one of the "Fruits" in
Mat. 7:15-20.
What beliefs result in you grieving over anything you find in yourself that is contrary to what is pleasing to the God you love because of how much He loved you and took the penalty you deserved upon Himself while you were still His enemy and were hostile to him ... and then results in us doing absolutely everything in our power to correct every single flaw we find?
2Co. 7:9-11
There are a lot more. The trick is to get on the right path and stay on it until you get to that exceedingly narrow gate to life: "Faith in the truth". And only those who stay seeking, knocking, asking, proving all things over and over and over again, always holding fast to what is being proven good/true, and not to any beliefs, can get there. It's the only path, and it will result in all the ongoing "Fruits" God says are always true of true Christians.
Odds are my beliefs are wrong or off, right now. Odds are I am missing things, and misinterpreting things. I hunt for people who disagree as there is no possible way to discover where I am wrong, or how from those who agree with me. If you agree with me on all things, only one thing is absolutely certain. YOU ARE WRONG! Follow the path that will get everyone "From" erroneous beliefs "to" truth eventually, if you never stop the process till the day you die. Stop, and the promise of
Luke 11:9-13 no longer applies to you. No one is guaranteed the beliefs that result in salvation until the day they die.
That said, based on ongoing habitual Fruits, a number of which I possessed a long time prior to me discovering the scriptures on the topic, I seem to pass ... so far. It appears to me you pass as well. Stay the path.