There have been alot of debate in Christian circle on the absence of religious terms like 'trinity' and 'rapture' from the Bible. Both terms are key doctrines of some denominations. The reason for the absence of these religious terms is not far-fetched:
a.) English Lang. is not the original lang. in which the Bible was written.
The English versions of the Bible were translation from the original Hebrew, Latin and Aramaic lang. 0f the Bible respectively.

b.) The Greek Lang. is advance than English Lang.
The English versions of Scripture didn't elaborate on certain words like 'love' which was well differentiate as 'philia', 'eros' and 'agape'. English lang. Calls all kind of love 'love'. The 'love' in John 3:16 is not differentjated 4rm Solomon's kind of love for women. So, it is. English language couldn't place 'rapture' meaning 'caught up' and 'trinity' meaning 'three distinct personality in the Godhead' in the Bible cause is beyond it's capacity in comparison to the Greek tongue.
God bless you.

Language evolves,
We all forget that language is cultural, and what is not available in a certain culture will have no means of identification.

Therefore during translation if those actions, feeling, behaviour and many other things were not in the culture of the language being translated into, we will only see it being referred to the closest thing to it.

That is why you need the spirit of God to interpret the word of God to you.