The Trinity is a Biblical concept

I believe I refuted his argument, but he doesn't rebute my refutation instead restate his arguments using few verses while I used alot to introduce my point that Elohim and Echad define one God and no Trinity.I refuted Genesis 1:26 in my previous post, my adversary does not rebute my refutation, instead restates his previous argument(my adversary drops the argument of Elohim, and focuses on Echad).But I will rebute his second argument, again:Genesis 2:21,24 Genesis 4:19, Judges 20:11(and others):על־כן יעזב־איש את־אביו ואת־אמו ודבק באשתו והיו לבשר אחד Trinitarians often enjoy exploiting this verse to further there assumption of a “uni-plurality” in their “Godhead”. However, cheap tactics and arguments from English grammar are not sufficient. So let’s get to demolishing this assumption: Genesis 29:14, Judges 9:2 2 Samuel 19:12 all use basar (בשר) to mean one’s kindred or flesh and bone. The Trinitarian assumption is that if man and woman are echad in marriage, therefore three beings can all be echad, yet still maintain independently the attributes of each being “fully God” without being three gods. The problem with this line of reasoning is that man and woman, though echad in purpose, are still two separate beings. A husband is not his wife and vice-versa. Husband and wife are neither “co-equal” nor “co-eternal”. They are one family. A man and woman come together to make a child, which is their flesh and bone. Rabbi Singer says the following about the improper use of "echad." "Although this ‘proof’ is as flawed as the doctrine it seeks to support, for those who lack an elementary knowledge of the Hebrew language, this argument can be rather puzzling. The word echad in the Hebrew language functions in precisely the same manner as the word ‘one’ does in the English language. In the English language it can be said, ‘these four chairs and the table constitute one dinette set,’ or alternatively, ‘There is one penny in my hand.’ Using these two examples, it is easy to see how the English word ‘one’ can mean either many things in one, as in the case of the dinette set, or one alone, as in the case of the penny. Although the Hebrew word echad functions in the exact same manner, evangelical Christians will never offer biblical examples where the word echad means one alone. Thus, by only presenting scriptural verses such as Genesis 1:5 and Numbers 23:13, it creates the illusion to the novice that the word echad is somehow synonymous with a compound-unity. Nothing, of course, could be further from the truth." The argument that my adversary used above about the word "Echadאֶחָד" has been debunked by me and others, I will state another refutation, with the typical verses that Trinitanians use to prove their "Three in one" concept: Genesis 2:24: Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one (echad) flesh. The Theological Wordbook of the Old Testament (TWOT) states: "Adam and Eve are described as "one flesh"(Genesis 2:24), which includes more than sexual unity" but when we use 1 Corinthians 6:16 as a cross reference, it appears that it means exactly sexual unity causing them to be "one flesh." What? know ye not that he which is joined to an harlot is one body? for two, saith he, shall be one flesh. Exodus 24:3 And Moses came and told the people all the words of the LORD, and all the judgments: and all the people answered with one (echad) voice . One what? One person's reply? No! One voice. Does "one voice" being heard mean that of "all the people" there was only one individual speaking? Of course not! It is simply understood to be the voice of many people speaking in unison so that you heard one sound. In this text using the word echad, does "one" really mean "one" in the context that it is meant to be used? Numbers 13:23 And they came unto the brook of Eshcol, and cut down from thence a branch with one (echad) cluster of grapes, and they bare it between two upon a staff. Again, you must ask yourself the question: One what? One grape? No. One cluster of grapes. Is one cluster of grapes the same as one grape? Absolutely not! In addition to that, the word here is grapes (plural). If echad was used in reference to the word grapes, the phrase would be nonsensical. In the phrase, "one cluster," does one sufficiently describe what the numeral "one" is supposed to describe? Without a doubt! Genesis 2:21 And LORD God caused a deep sleep to fall upon Adam, and he slept: and he took one (echad) of his ribs.How many ribs? Maybe God took a single rack of ribs (As you would receive a rack of barbecue ribs in a restaraunt).Genesis 22:2 And he said, Take now thy son, thine only son Isaac, whom thou lovest, and get thee into the land of Moriah; and offer him there for a burnt offering upon one (echad)of the mountains which I will tell thee of. How many mountains did Abraham go to? Exodus 25:19 And make one (echad) cherub on the one (different word) end and the other cherub on the other end.How many cherubs on one side? Leviticus 16:5 And he shall take of the congregation of the children of Israel two kids of the goats for sin offering, and one (echad) ram for a burnt offering. How many rams? Maybe God meant a "whole herd"? He said one; Trinitarian claim that one is supposed to mean a group. Numbers 10:4 And if they blow but with one (echad) trumpet, then the princes, which are heads of the thousands of Israel, shall gather themselves unto thee.Were they supposed to blow with an orchestra of trumpets in unison? Of the 943 times (by my count) echad is translated "one," it is translated to indicate a single character 901 times. In the remaining instances when it is involved in describing a group effort, it still means one.In reference to the Shema, the claim that the linking of the word Elohim and echad in the same statement indicate plurality of God is totally unfounded. So much bias has been infused into that statement that the accuracy of it is negligible. It becomes a Trinitarian doctrinal statement instead of a Biblical description of God. Deuteronomy 6:4 is speaking of ONE WHAT? ONE GOD! This is made clear by the scribe's reply to Jesus' statement that the Shema was the most important commandment in Mark 12:32, "Master, thou hast said the truth: for there is one God; and there is none other but he." If elohim or echad are referring to more than one of anything, they are referring to more than one GOD, which would make Trinitarians polytheists, or at least tritheists. Remember, for elohim to indicate any plurality, it would indicate a plurality of gods; not one God in three but three gods. If the Bible could be quoted as saying one gods, Trinitarians may have a legitimate argument, but that very statement would be contradictory. It would have to declare "one Trinity."