“(For the life was manifested, and we have seen it, and bear witness, and shew unto you that eternal life, which was with the Father, and was manifested unto us;)”
King James Version (KJV)
1:2 For the life - The living Word. Was manifested - In the flesh, to our very senses. And we testify and declare - We testify by declaring, by preaching, and writing, #1Jo 1:3|,4. Preaching lays the foundation, #1Jo 1:5 |- 10: writing builds there on. To you - Who have not seen. The eternal life - Which always was, and afterward appeared to us. This is mentioned in the beginning of the epistle. In the end of it is mentioned the same eternal life, which we shall always enjoy.
1Jo 1:2 For the life was manifested. The office of the apostle, having seen and known the Eternal Life as he lived on earth, was to bear witness of him to the world.