How do we know grace is essential for understanding salvation?

The necessity of grace is echoed throughout Scripture, particularly in Luke 8:10, where Jesus explains that the mysteries of the kingdom of God are given to His disciples, but to others, they remain parables and incomprehensible. This signifies that understanding God's Word, including the gospel of salvation, is a divine gift. It is through God's grace that the veil over our eyes is lifted, allowing us to see and understand the truth of Christ. Without this grace, many will hear the Word but remain unfruitful, akin to seed that falls on hard ground.