If the position of the Catholic Church is true, then the notion of sola scriptura is false. There is then no problem with the Church officially defining a doctrine which is not explicitly in Scripture, so long as it is not in contradiction to Scripture.
The Catholic Church was commissioned by Christ to teach all nations and to teach them infalliblyguided, as he promised, by the Holy Spirit until the end of the world (John 14:26, 16:13). The mere fact that the Church teaches that something is definitely true is a guarantee that it is true (cf. Matt. 28:18-20, Luke 10:16, 1 Tim. 3:15).
Anything is possible with God
It is impossible for God to contradict Himself. The GodMan Jesus established the Catholic Church and sent the Holy Spirt upon it to dwell in the Catholic Church until the end of time and this indwelling enables the Catholic Church to teach, sanctify and rule the faithful in the name of Christ which means the Catholic Church does the will of its Divine founder Jesus and which also means the Catholic Church is incapable of teaching error.
Luke 10:16 He that heareth you heareth me: and he that despiseth you despiseth me: and he that despiseth me despiseth him that sent me.
Dr, it isn't wise to reject the Teaching of the Catholic Church which Jesus established to Teach in His name.
Using the Bible, show me where Jesus said the Church He established would teach error?
The very question unmasks the fundamental insanity (I am being charitable and not using "evil") of any of the opponents of the Catholic Church's Doctrine. Jesus promised He would be with the Catholic Church untl the end of time. He called the Catholic Church His Bride. And Jesus saith to them: Can the children of the marriage fast, as long as the bridegroom is with them? Jesus doesn't lie nor is he a spiritual fornicator. He hasn't abandoned His Bride nor is He whoring around with another woman (Church).
I hope you are enjoying your Christmastide