1 John 1:1 That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, concerning the Word of life— ² the life was manifested, and we have seen, and bear witness, and declare to you that eternal life which was with the Father and was manifested to us— ³ that which we have seen and heard we declare to you, that you also may have fellowship with us; and truly our fellowship is with the Father and with His Son Jesus Christ.

The quote was written by Ellen White and can be found in the book Sons and Daughters of God, page 9.