How do we know Christ's voluntary suffering is true?

The account in John 18 emphasizes that Jesus's suffering and death were not due to external forces but were a result of His own free will. When confronted by soldiers, His declaration of 'I am He' not only led to a miraculous display of power but also reaffirmed that He could have resisted capture at any moment. The truth of His voluntary suffering is foundational in Reformed theology as it underscores that Jesus willingly chose to bear the burden of our sins in obedience to the Father’s will and for the sake of our redemption. This voluntary nature of His sacrifice implies that our salvation is rooted in His love and willingness rather than in coercion or necessity.