What is the significance of grace in salvation according to the sermon?

In the context of salvation, grace signifies God's unmerited favor towards sinners. Ephesians 2:8-9 states that we are saved by grace through faith, which emphasizes that faith itself is a gift from God rather than a work we perform. This understanding of grace leads to humility as we recognize that our salvation is wholly dependent on God's action rather than our own merits. The sermon highlights the importance of understanding this grace in relation to the mystery of Christ, underscoring the need for continual reliance on divine grace throughout the Christian life.