Matthew 13:52 (NKJV)
There are many different banks and all of them have some unique characteristics and rules. But, there is one rule that all banks have in common; if you want to withdraw money from an account you have to have money in the account. That sounds pretty simple but people have been known to try and get more money out of their bank account than what they have in the account. It is nice to be able to withdraw a lot of money from your account or to use your bank card for a purchase, but all of that is based on the idea that you have made some deposits in your account to cover the withdrawals.
In Matthew 13 Jesus compared a scribe to a householder. Someone who owns a house would normally have some things in their house that they could bring out whenever they chose to do so. Jesus said that a scribe, a person who spent their time studying the scriptures, who was taught about the things of the kingdom of heaven would also have some things that they could bring out. In both cases, for a scribe or householder to bring something out of what they have, they first have to have it. You can't give someone something you don't have and you can't bring something out that you have not first put in.
God's Word is filled with many wonderful things that will help us and other people, so we need to learn about everything that is in the Word. As we spend time reading and studying God's Word we will make deposits into our heart that God can then bring out to help us and others. But to bring out the truth we first have to know that truth. John 14:26 tells us that the Holy Spirit will remind us of what Jesus has said, but to remember something means that you have already learned it. By having some regular time of depositing God's Word into our life we will be ready for God to work in us and also through us to help others.