Examples would be the parting of the Red Sea, Jesus walking on water, the resurrection of Lazarus, etc. Some hold that it is a violation of the natural order of physical laws. Others maintain that there is no such violation upon God's part but only a natural manifestation of His work. The teaching that God alone is the one who saves. It is opposed to synergism which teaches that God and man work together in salvation.
Cults are synergistic.
Christianity is monergistic. The belief that there is more than one God, but only one is served and worshiped. Mormonism is an excellent example of monolatry. It teaches the existence of many Gods of many worlds, yet worships only the one of this planet. Therefore, monolatry is a division of polytheism, the belief in many gods.