How do we know God opens our spiritual eyes?

God opens our spiritual eyes through the work of the Holy Spirit, grantings us the faith to cry out for mercy, just as Bartimaeus did. In Mark 10:52, Jesus tells Bartimaeus, 'Thy faith hath made thee whole,' indicating that it is through faith—an act empowered by God's grace—that we begin to see the truth of the gospel. When we sincerely seek God, recognizing our spiritual blindness, He responds by revealing His truth, enabling us to follow Him more clearly. This transformative act is a central aspect of our salvation experience.