The passage in I John 5:7-8 appears to be a clear proof of the Trinity, the belief that God is made up of three Beings in one. There is just one major problem: The Trinitarian language is not original to the text. Martin Collins provides evidence from both the context of I John and recent scholarship that words were inserted long after John wrote his epistle.
Christians believe that the Bible is the written Word of God, and therefore, it is inspired and essentially free from error (any errors being the result of human misunderstanding and misinterpretation). Asking if the Bible can in any way contain contradictions, Martin Collins answers that, while difficulties do exist, they can be explained with thoughtful analysis.
David C. Grabbe: In Ezekiel's Millennial vision, he records God's instructions for worship after Jesus Christ returns, including the annual festivals. Within this record, the instructions seem to say that the Passover should be observed for seven days ...
An important key to correct biblical interpretation is to understand a verse or passage as the author intended, not according to our own prejudices. Richard Ritenbaugh explains that Genesis 6:9 has suffered such a biased interpretation and shows what the Hebrew really implies.