Download apk by clicking download button from your android phone. If your browser warns you on downloading apk from outside playstore, IGNORE it as you are downloading from the official androidbibles site.
Watch the download in the notifications panel. Once complete, tap on the new notification to install.
Your settings may not allow you to install apk outside Play Store. If you see the popup, tap on SETTINGS and follow instructions.
Go to 'Settings -> Security -> Unknown Sources' and turn it on.
Go back to Downloads and open the downloaded and complete the installation by clicking on the downloaded apk. DO NOT forget to turn off Unknown Sources once the installation is complete