How do we know that God's grace in Christ alone is sufficient for salvation?
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God's grace in Christ is sufficient for salvation because it is based on the complete work of Christ, as emphasized in Galatians and affirmed in Ephesians 1:11.
The sufficiency of God's grace in Christ is firmly rooted in the New Testament, particularly in Paul's writings. In Galatians, he warns that adding even one requirement, such as circumcision, to the gospel of grace perverts the entire message. In Ephesians 1:11, Paul reiterates that believers are predestined according to God's sovereign will, which assures that salvation is not dependent on human merit or effort. This reflects the essence of the gospel: salvation is a free gift from God, fully accomplished by Christ's work, emphasizing that nothing else is needed for salvation.
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