300
Recall from the passage a verse or verses where Paul encourages Timothy to stick to the faith and original teachings.
Verses 14-15
v14 "As for you, you must hold on to what you have learned. And you must hold on to what you have believed. You know who taught it to you. And so you know that it is true."
v15 "Since you were a child, you have known the holy *scriptures. They can show you how to receive *salvation. This *salvation is by *faith in Christ Jesus."