What does worship 'in spirit' mean?

'Worshiping in spirit' refers to the internal, genuine engagement of a believer's heart with God, made possible through regeneration by the Holy Spirit. This involves not only the emotional and mental faculties but also being led and empowered by the Holy Spirit to approach God with sincerity. According to Philippians 3:3, true Christians worship authentically when their spirits are alive in Christ, rejoicing in all that God has revealed through Him. This understanding leads to a fervent and truthful expression of praise and devotion.