Calvinism accepted a system of tradition rules and structures of the Christian religion. It highlights the truth that God is the absolute leader of all salvation (Allen & Lemke, 2010). Most critics say that Calvinist churches have an easy lifestyle and consider it a Reformed tradition or religion. This worship technique was invented by John Calvin. Systematic theology is also a system that produces an effort to formulate a well-organized and coherent system of faith and beliefs. This theory attempts to examine this in a very systematic way, but Christian doctrines develop over time (Berkhof, 1996). Some theologians seek guidance from systematic theology as a thematic assortment and exploration of the contents of the Bible. Both Calvinism and systematic theology are similar in that they have biblical foundations. Theological Definition of Calvinism According to (Allen and Lemke, 2010) Calvinism, salvation comes not from a person's power, religion, or efforts, but from the grace of God. Calvinists assert that God renews human understanding, way of thinking, and, furthermore, the will to pursue morality. Most Calvinists have raised various questions because some of us fully adhere to Calvinism while others follow it entirely. Calvinism is the highest type of development achieved by society, in the 16th century, through vigorous religious and political reforms. . As a principle in itself, this confers a certain kind of independence to ancestry (Allen and Lemke, 2010). It is a religion that is distinctive in its own way and employs a particular theological system and a very unique way of worship. Together, it pursues a well-designed way of...... middle of document ...... e, it is very important to consider all passages that are relevant to Scripture before drawing final conclusions. Systematic theology tends to relate in a certain way to the world, which incorporates its historical context and the way it embraces culture (Berkhof, 1996). His approach allows us to examine everything the Bible says about an issue. This ensures a natural approach to Christianity, as opposed to a tedious approach. In a changing society, this approach is common in various fields, among researchers. Indeed, major subjects tend to bring together various theories and subjects to arrive at a unified subject. For example, economics is a subject that seeks to merge the different concepts and principles related to it into a coherent subject similar to the way in which systematic theology attempts to develop a coherent religious doctrine.