God's Foreknowledge
When we look further at the relationship between election and salvation, we need to be concerned with what theologians call the ordo salutis, or “the order of salvation.” The ordo salutis has to do with the order in which various events occur that lead to our redemption, specifically the logical order rather than the temporal order.
Here’s what I mean by that distinction. We believe that we are justified by faith alone. But how long after we possess true saving faith are we justified? Is it five seconds, five minutes, five months, five years? No, we say that justification and faith are coterminous with respect to time. The very moment we have true faith, in that same instant, God receives us as justified people. But we still say that faith comes before justification, even though they occur at the same time. Faith precedes justification logically. In other words, since our justification depends on and rests on faith, faith is the prerequisite, the necessary condition that has to be present for justification to take place. So faith is logically necessary for justification. It precedes justification, not in time, but in terms of logical necessity. So when we talk about the order of salvation, keep in mind that what we have in view are the distinctions with respect to prerequisites on the basis of logical necessity.