Our Lord and God Jesus Christ never mentioned the subject. He referred to the Old Testament scriptures already written, now being replaced by "the new testament," the institution of His Church. "Thou art Peter and upon this Rock I will build my Church." This has been excised from Protestant bibles out of fear of exposure for their own error. Christ spoke at the Last Supper of His coming Sacrifice on the Cross, "This is My Body, ...." and "This is the Chalice of MY Blood of the NEW AND ETERNAL TESTAMENT: THE MYSTERY OF FAITH: WHICH SHALL BE SHED FOR YOU AND FOR MANY UNTO THE REMISSION OF SINS." And, Our Lord is not "shouting" as so many poor readers tend to take emphasis for. Caps are mainly for attention and important value, for all the readers here and everywhere else.
Our Lord never wrote one word of scripture, save for the word He wrote in the sand for the pharisee's sins.
He never told His Apostles to write anything. His is a verbal teaching Church, as He taught. Of the Epistles, in a letter to the flocks in Corinth, St. Paul remarks on the admonishments of sin "these things are written for our correction," I Cor. x 6-13.
It is a divinely instituted teaching Church with a hierarchy of teaching successors, with grace from the Sacraments instituted by Christ. But the written scriptures were a help to the Israelites, and the compilation of the Words of Christ written down by the Apostles and Early Fathers are also an assist to the faithful. But they are not necessary. The Church was established by Christ before one word was written.
Douay Rheims 1915 Old and New Testaments.
St. Andrew's Missal, 1937, pp. 984-985.