Bible verses can be found by topic online on the website Bible Gateway, Open Bible and Bible Study Tools. Each website allows a user to search for bible verses according to topic or theme.
Bible Gateway allows a user to search for a keyword, browse topics alphabetically or access a dictionary of Biblical themes. Specific passages can also be looked up.
Open Bible also has a search bar in which a user can type a keyword or topic. The website also lists topics alpabetically.
Bible Study Tools lists Bible verses by theme. The user can click links to find Bible verses on a variety of topics including hope, friendship, forgiveness and anger.