How do we know that salvation is available to everyone?

The assertion that salvation is available to everyone aligns with the understanding that Christ is the light that comes into the world, as described in John 1:9. However, it is critical to note that this availability is met with rejection by many who prefer darkness over light, as stated in John 3:19-20. Thus, while the proclamation of salvation is universal, the acceptance and realization of that salvation are dependent on individual responses to the light of Christ. This reflects the tension between God's sovereignty in salvation and human depravity, where individuals knowingly reject the truth of the gospel.