Paul’s choice of language implies that God has a plan and intention for His people. We have been called in Christ “according to His purpose.” God does not convert people without a design. That design is that we be conformed to the image of His Son—ultimately in our glorification. But all things in life are working together in order that we are conformed to His image in our sanctification. This is to say that everything in life can be used for our good and spiritual growth.