Union with Christ is the foundation of the Christian life, establishing identity and securing position in God’s eternal purposes. Baptized into one Spirit, believers are engrafted into Christ’s body, where justification, adoption, sanctification, perseverance, and glorification flow from this foundational union. Experience does not create reality; it is reality that creates experience. You are not united to Christ because you feel filled; rather, you are filled because you are united. This distinction protects assurance and deepens obedience. The Holy Spirit’s sovereign act of union is once-for