How does our union with Christ affect our salvation?

The concept of union with Christ is pivotal in Reformed theology, as our salvation is intricately linked to our being joined with Christ in His death and resurrection. In 2 Timothy 2:11, Paul assures believers that if we have died with Him, we shall also live with Him. This union signifies that through faith, believers participate in Christ’s redemptive work, which not only secures their salvation but also guarantees their eternal life. It illustrates the completeness of God’s plan for salvation, emphasizing that it was God's decision to include each believer in this union before the foundation of the world. As a result, believers can have confidence in their salvation because it rests upon Christ's righteousness and faithfulness, not their own.