Journal articles are a pillar of academic research, and can inform your papers with current and relevant information. Here are recommended databases -- each containing a number of journals -- where you can search for articles on topics related to religious studies and religion.
A full-text collection of major religion and theology journals combined with three print indexes published annually by the American Theological Library Association. Coverage is 1949 to date.
You will often be asked to find scholarly articles for your assignments. Have a look at this Popular vs. Scholarly Articles guide, which outlines some of the differences between popular and scholarly articles.