I apologize that I couldn't find the relevant post to reply towards, but concerning whether Christians are under law, I thought this might help:
1Co 9:19-21 KJV
(19) For though I be free from all men, yet have I made myself servant unto all, that I might gain the more.
(20) And unto the Jews I became as a Jew, that I might gain the Jews; to them that are under the law, as under the law, that I might gain them that are under the law;
(21) To them that are without law, as without law, (being not without law to God, but under the law to Christ,) that I might gain them that are without law.
Within the same breath Paul is using the word law to mean two different things. The Jew is under law, but there are those without law. Yet those without law are still under law to God and Christ.
This also ties into the discussion of whether God is Christ, as Paul uses the two terms interchangeably here without batting an eye. The law to God is the same as the law to Christ.
So if Paul was under the law to God and Christ, what was that law? It certainly cannot be correct to say that we have no law. Christ did give us commandments:
Joh 13:34-35 KJV
(34) A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another.
(35) By this shall all men know that ye are my disciples, if ye have love one to another.
1Jn 2:1-11 KJV
(1) My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous:
(2) And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.
(3) And hereby we do know that we know him, if we keep his commandments.
(4) He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
(5) But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him.
(6) He that saith he abideth in him ought himself also so to walk, even as he walked.
(7) Brethren, I write no new commandment unto you, but an old commandment which ye had from the beginning. The old commandment is the word which ye have heard from the beginning.
(8) Again, a new commandment I write unto you, which thing is true in him and in you: because the darkness is past, and the true light now shineth.
(9) He that saith he is in the light, and hateth his brother, is in darkness even until now.
(10) He that loveth his brother abideth in the light, and there is none occasion of stumbling in him.
(11) But he that hateth his brother is in darkness, and walketh in darkness, and knoweth not whither he goeth, because that darkness hath blinded his eyes.
1Jn 4:20-21 KJV
(20) If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen?
(21) And this commandment have we from him, That he who loveth God love his brother also.
I apologize if this sounds like the proverbial beating the dead horse. I stumbled on this by accident and thought it might be helpful for clearing up a previous discussion. Law can mean more than one thing, it can refer to more than one law, we today are under the law of Christ.
Mat 5:43-48 KJV
(43) Ye have heard that it hath been said, Thou shalt love thy neighbour, and hate thine enemy.
(44) But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
(45) That ye may be the children of your Father which is in heaven: for he maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust.
(46) For if ye love them which love you, what reward have ye? do not even the publicans the same?
(47) And if ye salute your brethren only, what do ye more than others? do not even the publicans so?
(48) Be ye therefore perfect, even as your Father which is in heaven is perfect.