From the website: Monergism. Much more here.
“This office of mediator between God and man is proper only to Christ, who is the prophet, priest, and king of the church of God; and may not be either in whole, or any part thereof, transferred from him to any other.” – London Baptist Confession
Christ alone (Solus Christus, Solo Christo), is one of the five Solas of the Reformation. It emphasizes that the death and resurrection of Jesus Christ is not only necessary for salvation but sufficient to save to the uttermost. That no amount of human works or merit can contribute to Christ’s finished priestly work. Christ’s all-sufficiency means, by implication, that we are insufficient of ourselves. Indeed the Scripture says “Not that we are adequate in ourselves to consider anything as coming from ourselves, but our adequacy is from God.” (2 Corinthians 3:5)