As a free gift from David you can download his eBooks. You will need an eBook reader or eBook reader app. From iphone App Store David suggests Epub Reader by Junjie Ruan. From Android Play store eBoox: ePub PDF e-book Reader.
Jesus Christ is the same yesterday and today and forever – Hebrews 13:8
Daily Devotional
If you fully obey the LORD your God and carefully follow all his commands I give you today, the LORD your God will set you high above all the nations on earth.