Prevenient grace is the...
Prevenient grace is the understanding that in our relationship with God, God comes to us before we even take one step towards God. Justifying grace is our acceptance of Christ's sacrifice on or behalf. When we are "justified," it is "just-as-if" I had never sinned in God's eyes. It is a free gift. But justification also requires a life of sanctification. That is when we try to live lives that are pleasing to God. We falter, we stumble but always we need to move ourselves forward in our relationship with the Creator.