BC is abbreviated as BC, which is the abbreviation of English words before the birth of Christ. AD or the English word after AD is abbreviated as AD, which is the abbreviation of the Latin word anno domini, meaning after the birth of Christ.

The English word for h istory is h i story, which is a combination of his "his" and story, meaning his story. Here he refers to an epoch-making historical figure, and the figure standing in the middle of history is Jesus Christ, so the real history is his story about Jesus Christ.

This shows that Jesus Christ is the center of human history and the supreme master in charge of human history.

I want Jesus to be the center of my life history, and I also want him to be in charge of my life history and become the supreme teacher.