How do we know Jesus as our propitiation is true?

In 1 John 2:2, it is stated that Jesus Christ is the propitiation for our sins, which means He satisfies God's wrath and reconciles us to Him. This is essential because it underscores God's justice; sins must be addressed rightly. Christ's death as a propitiation demonstrates that He fully bore the penalty for our sins, ensuring that God's justice is satisfied while also allowing for mercy towards us. This profound truth is foundational to our faith as it assures believers of their standing before God.