The New Testament reiterates and affirms at least 9 of the 10 commandments, so yes they are still valid and Jesus indeed strengthened them.
For whoever keeps the whole law but fails in one point has become guilty of all of it. James 2:10.
So tell us which commandment is it that you refuse your Lord and savior? Which of the 10 laws did Jesus break? He was accused but he never broke any. He showed us how to to please God. He showed us how man can follow the law. What commandment is it that you refuse to kneel to?