I John 5:19: We fully know that we are from God and that the world is laid out along the ground by evil. -MGV
Starting in the same way as verse 18, verse 19 speaks of something that we fully and completely know, being in the perfect tense. This verse is also carrying the same though as verse 18, for when is says “from God” or more literally “out of God”, it is referring to us being born of God, the quality that verse 18 is talking about. However, while that verse is talking about how we are protected by God, here it is talking about how the rest of the world is not.