Predestined in Him
Eph 1:11 In him we were also chosen, having been predestined according to the plan of him who works out everything in conformity with the purpose of his will
There is a sense of security being in Christ, knowing God's will and intention that all in Christ will be saved. And it seems that it is this sense of security which Paul is trying to communicate to the saints at Ephesus. In Christ we are chosen for this destiny. That is, as Christians we are chosen. The Biblical idea of predestination is not the same as fatalism, for we are involved in being chosen by putting our faith in Christ. For it was His will that we be involved in this process. However, having been chosen as such our destiny is secure. It's like stepping on an elevator that is predestined for a certain floor. Once you're on, you don't have to worry about whether you're going to get there or not. You just have to worry about whether you are in fact on the elevator. (And you're not going anywhere if you just stand in the doorway) So make sure you are "in Him".