How much of the things Jesus said to the Nephites did Mormon write down?

0 How much of the things Jesus said to the Nephites did Mormon write down?

There are save two churches only; the one is the church of the Lamb of God, and the other is the church of the devil 1 Nephi 14:10

There cannot be written in this book even a hundredth part of the things which Jesus did truly teach. 3 Nephi 26:6

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