John Macarthur said this quote

“ God begins the process of perfecting us from the moment we are converted from unbelief to faith in Christ. The Holy Spirit regenerates us. He give us a new heart with a new set of holy desires (Ezek. 36:26). He transforms our stubborn wills. He opens our hearts to embrace the truth rather than reject it. He enables us to believe rather than doubt. He gives us a hunger for righteousness an a desire for Him. And thus the new birth transforms the inner person. From that point on, everything that occurs in our lives - good or bad - God uses to move us toward being like Christ (Rom. 8:28-30). ”