Does the Johannine Comma of 1 John 5:7 teach the Trinitarian doctrine of Modalism or Tritheism?

*Above: Arian Unity, Tritheist Trinity, & Modalist Trinity* 1 John 5:7-8 ESV > **[]** > For there are three that testify **[]**: the Spirit and the water and the > blood; and these three agree. 1 John 5:7-8 NKJV > **[For there are three that bear witness in heaven: the Father, the Word, > and the Holy Spirit; and these three are one.]** And there are three that > bear witness **[on earth]**: the Spirit, the water, and the blood; and these > three agree as one. The Johannine Comma or Johannine Gloss, the inserted portion of 1 John 5:7, only appears in published Bibles after the year 1520—thanks to the efforts of the Roman Catholic translator Erasmus. Does the Johannine Comma found in 1 John 5:7 teach the Trinitarian doctrine of Modalism or Tritheism?