If sacramentalism is undercut, sacerdotalism is bound to fall. Luther with one stroke reduced the number of sacraments from seven to two. Confirmation, marriage, ordination, penance, and extreme unction were eliminated. The Lord's Supper and baptism alone remained. The principle which dictated this reduction was that a sacrament must have been directly instituted by Christ and must be distinctly Christian.

here i stand by roland bainton, ch.8 p.106