Another word for teachings is tradition

Jesus Christ did not write any Scripture. He taught and passed down Tradition. The Church then wrote that Tradition in the New Testament. 

Protestants dislike the word, tradition, so they try to gloss over it or change it to something else.  For example, in the NIV translation of the Bible, they have changed the translation of the Greek "paradosis" to teaching, rather than "tradition".

2 Thessalonians 2:15
New International Version (NIV)¹⁵ So then, brothers and sisters, stand firm and hold fast to the teachings we passed on to you, whether by word of mouth or by letter. 

2 Thessalonians 2:15
King James Version (KJV)
¹⁵ Therefore, brethren, stand fast, and hold the traditions which ye have been taught, whether by word, or our epistle.

Notice how the older, KJV translation, correctly translated the word to "traditions".  

Why is this important?  Because, as I said in the beginning, Christ did not write Scripture.  He passed down Teachings which He expected would be passed down in every generation.  Jesus established Traditions which He expected to be taught in every generation.  Here is what He said:

Matthew 28:18-20 King James Version (KJV)
18 And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth.19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost:
20 Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you always, even unto the end of the world. Amen.

Thus, in condemning "traditions", they are condemning the teachings of Jesus Christ.