To resolve the issue of The Bible Memory App not opening, follow these step-by-step troubleshooting measures:

1. Check for Updates: Ensure that your device is running the latest version of iOS. To check for updates:
- Open the Settings app.
- Tap on General.
- Select Software Update to see if there is an available update. If there is, download and install it.

2. Force Close the App: Sometimes, the app may not respond properly. Force closing it can help:
- Swipe up from the bottom of the screen or press the home button to access the app switcher.
- Locate The Bible Memory App and swipe it up to close it completely.

3. Restart Your Device: A simple restart can often resolve issues:
- Press and hold the power button until the "slide to power off" option appears.
- Slide to turn off your device, then press the power button again to turn it back on.

4. Clear App Cache: If the app still doesn't open, try clearing its cache:
- Go to Settings > General > iPhone Storage.
- Find The Bible Memory App in the list and select it.
- If an option exists, choose to Offload App to remove it and then reinstall.

5. Delete and Reinstall: If clearing the cache does not work, consider deleting the app and reinstalling it:
- Press and hold the app icon until it wiggles, then tap the "X" to delete it.
- Go to the App Store and search for The Bible Memory App and reinstall it.

6. Check for Known Issues: Look for any ongoing issues with the app that may be affecting its performance. You can check the app's help forum or support page for updates on any known bugs or problems - learn more - learn more.

7. Contact Support: If the app still does not open after following these steps, consider reaching out for support:
- Visit the Contact Us page for assistance directly from the support team - learn more.

Taking these steps should help in resolving the issue with The Bible Memory App not opening.