How does one become spiritual according to the Bible?

The biblical pathway to becoming spiritual is through the rebirth that the Holy Spirit provides. As outlined in John 3:3, one must be born again to enter the kingdom of God, indicating a complete transformation is necessary. This new birth is not something one can accomplish on their own; it is solely the work of God through the Holy Spirit. Ezekiel 36:26-27 states that God will replace a heart of stone with a heart of flesh, enabling one to respond to Him. Thus, the spiritual journey begins and continues through reliance on God’s grace and the inward change brought by the Holy Spirit.