The Concept of Trinity is Rejected by the Old Testament and the New Testament
Old Testament:
The Book of Deuteronomy relates:
שמע ישראל יהוה אלהינו יהוה ׀ אחד
"Hear, O Israel: The LORD our God is one LORD" (Deuteronomy 6:4)
The Book of Nehmeiah relates:
אתה־הוא יהוה לבדך
"Thou, even thou, are Lord alone" (Nehemiah 9:6)
The Book of Isaiah relates:
אנכי אנכי יהוה ואין מבלעדי מושיע
"I, even I, am the LORD; and beside me there is no saviour" (Isaiah 43:11)
The Book of Isaiah relates:
כה־אמר יהוה מלך־ישראל וגאלו יהוה צבאות אני ראשון ואני אחרון ומבלעדי אין אלהים
"I am the first, and I am the last; and beside me there is no God" (Isaiah 44:6)
The Book of Isaiah relates:
אני יהוה ואין עוד זולתי אין אלהים אאזרך ולא ידעתני
"I am the LORD, and there is none else, there is no God beside me: I girded thee, though thou hast not known me (Isaiah 44:5)
The Book of Isaiah relates:
למען ידעו ממזרח־שמש וממערבה כי־אפס בלעדי אני יהוה ואין עוד
"That they may know from the rising of the sun, and from the west, that there is none beside me. I am the LORD, and there is none else" (Isaiah 44:6)
The Book of Isaiah relates:
הגידו והגישו אף יועצו יחדו מי השמיע זאת מקדם מאז הגידה הלוא אני יהוה ואין־עוד אלהים מבלעדי אל־צדיק ומושיע אין זולתי
"Tell ye, and bring them near; yea, let them take counsel together: who hath declared this from ancient time? who hath told it from that time? have not I the LORD? and there is no God else beside me; a just God and a Saviour; there is none beside me." (Isaiah 45:21)
The Book of Isaiah relates:
פנו־אלי והושעו כל־אפסי־ארץ כי אני־אל ואין עוד
"Look unto me, and be ye saved, all the ends of the earth: for I am God, and there is none else."(Isaiah 45:22)
The Book of Isaiah relates:
זכרו ראשנות מעולם כי אנכי אל ואין עוד אלהים ואפס כמוני
"Remember the former things of old: for I am God, and there is none else; I am God, and there is none like me,"(Isaiah 46:9)
The Book of Deuteronomy relates:
וידעת היום והשבת אל־לבבך כי יהוה הוא האלהים בשמים ממעל ועל־הארץ מתחת אין עוד
"Know therefore this day, and consider it in thine heart, that the LORD he is God in heaven above, and upon the earth beneath: there is none else" (Isaiah 4:39)
The Book of Isaiah relates:
היש אלוה מבלעדי ואין צור בל־ידעתי
"....Is there a God beside me? yea, there is no God; I know not any" (Isaiah 44:8)
New Testament:
The Gospel of Mark relates:
ὁ δὲ Ἰησοῦς ἀπεκρίθη αὐτῷ, ὅτι Πρώτη πασῶν τῶν ἐντολῶν, Ἄκουε Ἰσραήλ κύριος ὁ θεὸς ἡμῶν κύριος εἷς ἐστίν
"And Jesus answered him, The first of all the commandments is, Hear, O Israel; The Lord our God is one Lord" (Mark 12:29)
The Gospel of Mark relates:
καὶ εἶπεν αὐτῷ ὁ γραμματεύς Καλῶς διδάσκαλε ἐπ' ἀληθείας εἶπας, ὅτι εἷς ἐστιν Θεὸς, καὶ οὐκ ἔστιν ἄλλος πλὴν αὐτοῦ·
"And the scribe said unto him, Well, Master, thou hast said the truth: for there is one God; and there is none other but he" (Mark 12:32)
The Gospel of Luke relates:
εἶπεν δὲ αὐτῷ ὁ Ἰησοῦς Τί με λέγεις ἀγαθόν οὐδεὶς ἀγαθὸς εἰ μὴ εἷς ὁ θεός
"And Jesus said unto him, Why callest thou me good? none is good, save one, that is, God" (Luke 18:19)
The Gospel of Matthew relates:
Κύριον τὸν θεόν σου προσκυνήσεις καὶ αὐτῷ μόνῳ λατρεύσεις
Thou shalt worship the Lord thy God, and him only shalt thou serve (Matthew 4:10)
The Letter to Rome relates:
ἐπείπερ εἷς ὁ θεός ὃς δικαιώσει περιτομὴν ἐκ πίστεως καὶ ἀκροβυστίαν διὰ τῆς πίστεως
"Seeing it is one God, which shall justify the circumcision by faith, and uncircumcision through faith" (Romans 3:30)
The First Letter to Cornith relates:
ἀλλ' ἡμῖν εἷς θεὸς ὁ πατήρ ἐξ οὗ τὰ πάντα
"But to us there is but one God, the Father, of whom are all things...." (1 Corinthians 8:6)
The First Letter to Cornith relates:
οἴδαμεν ὅτι οὐδὲν εἴδωλον ἐν κόσμῳ καὶ ὅτι οὐδεὶς θεὸς ἕτερος εἰ μὴ εἷς
".....we know that an idol is nothing in the world, and that there is none other God but one" (1 Cornithians 8:4).
The Gospel of John relates:
αὕτη δέ ἐστιν ἡ αἰώνιος ζωή ἵνα γινώσκωσιν σὲ τὸν μόνον ἀληθινὸν θεὸν καὶ ὃν ἀπέστειλας Ἰησοῦν Χριστόν
"And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent." (John 17:3)
The First Letter to Timothy relates:
εἷς γὰρ θεός εἷς καὶ μεσίτης θεοῦ καὶ ἀνθρώπων ἄνθρωπος Χριστὸς Ἰησοῦς
For there is one God, and one mediator between God and men, the man Christ Jesus (1 Timothy 2:5)
Translation and Miscellaneous Information:
For the Hebrew that was used Westminster Leningrad Codex (Constants only).
For the Translation that was used was the King James Version.
For the Greek that was used the Stephanus Textus Receptus 1550(KJV)
