People have a lot of different ideas about God and Jesus and the Christian life. Many of them may not necessarily be right, but people can still have a fruitful walk while believing and adhering to them. The rightness or wrongness of our theology isn’t what makes us Christians. God makes us Christians through our faith in his redeeming power.

But I think there is at least one disposition that is a kind of prerequisite. Whether it’s understood with this language, or in a less concrete or intellectual sense.

It’s from the end of Job where God is rebuking Job and his friends for their presumptuous attitudes.

“Who has first given to me, that I should repay him?
    Whatever is under the whole heaven is mine”

Christians must believe that God is all and that we have no claim that we can stake before him. We cannot believe that God owes us something. This would be contrary to grace, which is the only ground our salvation stands on.