Isn’t it easy to make ourselves responsible for procuring and maintaining our salvation? Something in us insists on taking at least a small portion of credit for our acceptance into heaven. Certainly, I spent years figuring out theological systems that allowed me to view myself as a contributor to my standing before God.
Thankfully, the Lord used His Word to convince me that He both initiated my salvation and will carry it to completion. He alone deserves all the glory.
This realization humbles us, which explains why so many of us fight against it. Surely, there must be some little way we cooperate with the Holy Spirit! Just a little? But no, Christ claims all the glory. His mercy takes us from start to finish.
Precisely because everything about our salvation emanates from His mercy and grace, we enjoy absolute security. Nothing can rob us of the security that He has bought us with His blood and therefore He will keep us for Himself. He will not permit anything — including ourselves — to interfere with His eternal purpose for us. We can rest secure in His grace.