Why is it important for Christians to let Jesus' words sink deep into their hearts?

In Luke 9:44, Jesus instructs His disciples to let His sayings sink deep into their ears, emphasizing the importance of internalizing His teachings. This instruction is pivotal for Christians today as it encourages believers to grasp the profound truths of the Gospel, which leads to genuine faith. When the teachings of Christ are embraced and understood, they transform the believer’s heart and mind, guiding them in their spiritual journey. These teachings reveal the nature of God's grace and the importance of reliance on Christ for salvation—a crucial aspect of sovereign grace theology.