Briefly, no. Which detail is wrong?
Detail? Oh well my question wasn't about any detail in specific juts if that was your summary of what CHristianity is.
But we are NOT Christ's "brothers" per say, He is the begotten Son of God and we were "created" through Him as was the rest of creation.
When the Son of God became Son of Man, yes we became His brothers in that regard, but not siblings by nature.
God's forgiveness of those that put their faith in Christ is a gift, a reward for those able to do such a thing ( not easy of course).
Personally I have never been a "fan" of any of the writings in which God "demands" worship and love and such.