'Writings' in the Bible

He said to them, “Therefore every scribe who has become a disciple of the kingdom of heaven is like the head of a household, who brings out of his treasure things that are new and fresh and things that are old and familiar.”

But if you do not believe his writings, how will you believe My words?”

and how from childhood you have known the sacred writings (Hebrew Scriptures) which are able to give you the wisdom that leads to salvation through faith which is in Christ Jesus [surrendering your entire self to Him and having absolute confidence in His wisdom, power and goodness].