How do we know Christ's manifestation was necessary?

The necessity of Christ's manifestation is anchored in the reality of human sinfulness. Scripture indicates that, due to Adam’s transgression, all humanity is subject to sin and its consequences. 1 John 3:5 reminds us that 'He appeared to take away our sins,' highlighting His unique ability to eradicate the burden of sin, something no other individual could achieve. As the perfect Lamb of God, His sacrifice was essential to satisfy divine justice and offer the hope of salvation to His people, fulfilling the eternal plan established before the foundation of the world.