How do we know life forevermore is promised to believers?

The promise of life forevermore comes from God, as emphasized in Psalm 133:3, which states, 'For there the Lord commanded the blessing, even life forevermore.' This blessing is secured in Christ alone, emphasizing that through His redemptive work, believers are granted eternal life. The assurance of this promise is tied to the notion that we are united with Christ in His death and resurrection, sharing in His victory over sin and death. Thus, believers can confidently expect this everlasting life, knowing it is grounded in God's sovereign grace and purpose, and not based on human merit or effort. Our faith hinges on the reality that when Christ died, He ensured the salvation and eternal existence of everyone for whom He suffered.