Why is being spiritual important for Christians?

The concept of being spiritual, as explained in the sermon, is foundational to the Christian faith. A spiritual person is defined as one who has been regenerated by the Holy Spirit and thus possesses a new nature that enables them to engage with God and understand His truths. This spiritual rebirth is essential, as John 3:6 states, 'That which is born of the flesh is flesh, and that which is born of the Spirit is spirit.' Without the Holy Spirit, one cannot discern spiritual matters, leading to the proclamation that to worship God in spirit and truth is only possible for the believer. Therefore, spiritual life is not merely about feelings or moral goodness, but about a true relationship with God that comes through the indwelling of His Spirit.