In Col.2:14 it reads "...having wiped out the handwriting of requirements that was against us which was contrary to us. And He has taken it out of the way, having nailed it to the cross." Paul wrote this while inspired by the Holy Spirit.
All that is true, including, as you mention, that "Paul wrote this." That is not the same as Jesus' having said it. Nowhere does Saint Paul suggest that every word he wrote should be treated as a quotation from Christ.
I don't mean to be nit-picky - although I guess I am - but you've taken a poetic figure from St. Paul and put it into Jesus' mouth as a quote. That seems just as loosie-goosie with the text as taking out all the "he's" and "him's."
Well, I believe all scripture is God breathed or inspired by God. And yes Jesus did not specifically state that he nailed them to the cross, but in the other passages I wrote to you he means that is what will take place once he fulfills the prophecies and the law. The Law given to Moses and the Jews excluded all other nations, however God made a promise to Abraham that all nations (Jews and Gentiles) would be blessed. This promise was fulfilled through Abraham's seed, and that Seed is Jesus. Because of sin the Law of Moses was added until Christ the seed should come. Then he would give us a more perfect law to follow. The bible says in Rom. 7:4 that we become dead to the law through the body of Jesus Christ because the law was nailed to the cross and the new testament or will takes it's place. The principles of the commandments are in the NT but they were perfected. So yes you are right, Jesus did not say he came to nail the old law to the cross, but the promise has been fulfilled. Paul as a writer for the bible received inspiration from God as to what to write. Thus Jesus came to nail the old law to the cross.