Synergism (theology) is when two or more people work together and their combined efforts produce an effect larger than just the sum of the two people's efforts. In theology, it refers to how God and humans work together to affect change and make things happen, such as miracles. God works with us, not against us, to bring about the things that God wants to happen. It's like when two people ride a bike together, so they can go faster than if just one person was riding it alone.