There were no words for consciousness back in Biblical time. There are hardly any nowadays.
However, I think that consciousness is what Jesus was talking about when he would talk crazily egotistically about himself. He was trying to use himself as a symbol for this other consciousness and describe it through his words, so he would say things like, “I am come a light unto this world, that whosoever shall believe on me shall not abide in darkness.” (John 12:46) and “For God so loved the world that he gave his only Son, that whosoever believeth in him should not perish, but have everlasting life.” (John 3:16). Another example, “I am the way, the truth and the life: no man cometh unto the Father but by me.” (John 14: 6)
Read the Bible with a mindset of symbolic application. I think the King James version is amazing. We know these aren’t Jesus’ real words (I mean, he spoke Aramaic) but for some reason (think!), they are really significant through the ages. Imagine that, when Jesus speaks in the Bible, this many resonating cases, this is the universe’s or Higher Power in the minds of the men who wrote this. The knowledge on their higher levels spoke to them through symbols that would work for a broad swath of people at different levels, thus making the Bible “holy.”