Why do we have different sects of christianity when there is only one god?

Sects don't mean different gods.

Explanation:

In Christianity, the different sects believe different facets of Christianity. For example, Baptists insist that only believers should be baptized and that it should be done by immersion rather than by the sprinkling or pouring of water, which is a method used by other sects.

Another example is the Orthodox Church believes that the Holy Spirit "proceeds from God the Father," while for Catholics and Protestants, the Holy Spirit "proceeds from the Father and the Son."

There are subtle differences in the different sects. They still believe in fundamentally the same things, just with nuances in beliefs.

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