The word 'Trinity' is not found in the bible, neither is the word 'Mellenium' nor 'Rapture' but the teachings are there. The word 'Millenium' comes from two latin words 'Mille' and 'Annum' in which 'Mille' is 'A Thousand' and 'Annum' is 'Years' when put together simply means 'a thousand years'

''In the begining God created the heavens and the earth.''
Gen 1:1 (kjv)

''Here, O Israel: The LORD our God is one LORD.''
Det 6:4 (Kjv)

NOW: Let us take a keen look at some of the Hebrew terms used in this verse. The word

''LORD'' in Hebrew is ''Adonai'' which is a title given to ''YHVH'' which is Abbreviated form of God's real name.
The word ''God'' in Hebrew is ''Elohim'' which is a pural noun, if literally translated woud be ''GODS''

The word ''One'' in Hebrew is ''Echad'' which means ''To collected together or United''

HENCE: we can come to realization that the Lord(YHVH) our God referred to in that verse, comprise of 'TWO' or more persons, Base on the pural terms ''Elohim'' and ''Ecah'' used to identify our ''Diety''

FURTHER MORE WE READ: ''God(Elohim) said, ''LET US'' make man in ''OUR OWN'' image, after ''OUR OWN'' likeness......''
NB: The terms us in this verse: ''Elohim'' (pural noun) ''Let Us'' (pural pro noun) ''In Our Own'' (pural pro noun) image and likeness. Gen 1:26 (kjv)
We can Definetly see that there are MORE THAN JUST A ''SINGLE'' Persons refered to in this verse.

AGAIN: ''God''(Elohim) said, The man as become as ONE of ''US'' knowin good and evil.''
Gen 3:22 (kjv)
NOTE: The terms used again,''Elohim'' (pural noun) and ''Us'' (pural pro noun).

ONCE AGAIN: ''God''(Elohim) said, ''LET US'' go down and confound their language.''
Gen 11:7 (kjv)
NOTE AGAIN: 'God said, ''LET US'' (pural pro noun)