How can a believer ensure they are filled with the Holy Spirit?

To be filled with the Holy Spirit, one must prioritize a relationship with Christ and seek His glory above all else. According to John 7:37-39, Jesus invites all who thirst to come to Him and drink, indicating that true fulfillment comes through faith in Him. It is through believing in Christ and acknowledging His work, particularly His glorification, that one receives the Holy Spirit. The act of coming to Christ in faith is a vital step in experiencing the fullness of the Spirit's presence in a believer's life.