Christianity, in it’s essence, is two steps: Believe and Receive.
Believe with all your heart that Jesus Christ is the historic. crucified, resurrected Son of God who died on the cross to bear the punishment of our past, present and future sins.
Receive his free gift of salvation by asking Jesus into your heart to fill you with the Holy Spirit and desire to obey and fellowship with God for the rest of your life.
This is all He requires (although there is still far more to living such a life). By faith we are saved and not by works, lest any man should boast.
If a person tells me they have done this, I will accept them as a Christian and hope to see evidence by their actions but I will not judge them. That is for Jesus to examine their hearts and judge them.
We will be shocked at the Day of Reckoning who is and isn’t accepted by Jesus and whose names are written in the Book Of Life. But that is not my job. It’s our duty simply to love one another as we have been commanded.
Yep OrangeHoof. You are correct.