I have been reading a bit of the Articles and Resources in the back appendix of the ESV Study Bible. If you have one and haven’t looked in the back of your Bible for the “extras” then I encourage you to do so.
Biblical Doctrine: An Overview (ESV Study Bible page 2531)
God uses vastly different circumstances and experiences to bring people to himself. As C.H. Spurgeon said,
“God’s spirit calls men to Jesus in diverse ways. Some are drawn so gently that they scarce know when the drawing began, and others are so suddenly affected that their conversion stands out with noonday clearness.”
The best evidence of true salvation is not having raised a hand or prayed a prayer, or having been baptized or christened. Instead, the true test off an authentic work of God in one’s life is sanctification as God continues the moral transformation he began in regeneration. This transformation will continue until the redeemed person is resurrected and made completely holy in heaven (glorification; cf. Rom. 8:28-30; Phil.1:6; I John 3:2)