Keep Thy Heart Bible Reader
For the word of God is quick, and powerful, and sharper than any twoedged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart.
— Hebrews 4:12 (KJV)
Welcome to the Keep Thy Heart Bible app!

Keep Thy Heart Bible Reader is a Bible study application for Windows, Mac, and Linux. It's meant to run locally on your computer, so that you don't need an internet connection after you've installed the modules that you want.

What you can do
By default, on the left is the Bible text, and on the right is the study pane. Study panes include things like commentaries, topics, cross-references, and Strong's lexicons. You can also write your own notes about a verse, or lesson or sermon notes, in the Notes pane. The study tabs follow along with the verse you have currently highlighted in the Bible pane. You may have multiple passage tabs open at once.
In the search box at the top, you may type a Bible reference or a term to search. By default, it uses a traditional keyword search. You can also switch the search type to Ideas Search and search for an idea. This uses an online search service if you allow web requests, or a meaning search pack you can install to search offline. The computer is often able to match passages that are similar to what you mean, even if the wording is different. For example, if you type "shepherd boy kills giant with a sling", it will find the passage about David and Goliath.
You may also re-arrange the panes by dragging them, once you turn on the Advanced Pane Manager. This allows you to create split panes, combine panes, etc. You can always switch back to a default layout at the top, by using the Layout drop-down button. You may also "pop out" tabs to their own windows. This allows you to use the app in split-screen mode, such as if you have more than one computer screen.
Where to start
- Installation — download and install the app.
- Quick Start — a short guided tour of the main window.
- Installing Modules — add commentaries, dictionaries, translations, or other modules.
The user guide
- Reading the Bible — navigation, translations, display modes, parallel view.
- Study Tools — commentaries, dictionaries, Study mode, cross-references, topics.
- Searching — quick search, advanced options, Ideas Search, find in pane.
- Notes & Highlights — verse notes, notes, prayer, highlighting.
- Copying & Exporting — copy formats, templates, exporting your work.
- Sessions & Layout — layout presets, splitting and popping out panes.
- Personalizing — themes, fonts, text size, preferences.
- Backup & Restore — protecting your notes and highlights.
- Keyboard Shortcuts — the complete reference.
Help inside the app
The app also contains a Help → Open Documentation option for some help tips inside the app itself. If you want to report an issue or give feedback, you can click Help → Report an Issue. You may also open an issue on the code's issue tracker.