Four Mysterious Matters. Let us first consider the main points of the Scripture verses cited in this message. In the first passage, 1 John 1:1-3, are three very precious verses. They are precious because they refer to four mysterious matters, all of which are divine. These four divine, mysterious matters are
1) the Word of life,
2) the life having been manifested,
3) the eternal life being reported to the believers, and
4) the believers having fellowship with the apostles and the apostles’ fellowship being the fellowship with the Father and with His Son Jesus Christ.
The life here is the divine, eternal life, which is a mystery. Then this eternal life produces another mystery, that is, the mystery of the fellowship of the divine life. Therefore, the mysterious fellowship of the eternal life is the subject of this Epistle of John. (Abiding in the Lord to Enjoy His Life, by Witness Lee)