You just misused 1 John 5:7.
It doesn't teach what you said "three aspects of one God". (Modalistic or Sabellian heresy)
Here is what it does teach:
1Jn 5:7 For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one.
1Jn 5:8 And there are three that bear witness in earth, the Spirit, and the water, and the blood: and these three agree in one.
Notice, the Bible doesn't say "three aspects of one God". It clearly states that three (Persons/Beings) agree together, like as a Chord or Trio in music, 3 individual distinct notes or Persons/Beings that agree harmoniously. Just as Jesus said:
Joh 17:21 That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me.
Joh 17:22 And the glory which thou gavest me I have given them; that they may be one, even as we are one:
Joh 17:23 I in them, and thou in me, that they may be made perfect in one; and that the world may know that thou hast sent me, and hast loved them, as thou hast loved me.
Did you see how John used the word "one"? The disciples are individual persons/beings, not the same person/being. You may see more here -
https://www.christianforums.com/thr...only-the-evidence-for-1-john-5-7-kjb.8060173/