These girls aren't Seventh-Day Adventists, but you can tell that they genuinely love the Lord. And the way that they study their bible is biblical, God says study His word precept by precept.
"Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth." 2 Timothy 2:15
"Whom shall he teach knowledge? and whom shall he make to understand doctrine? them that are weaned from the milk, and drawn from the breasts.
For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little:
or with stammering lips and another tongue will he speak to this people.
To whom he said, This is the rest wherewith ye may cause the weary to rest; and this is the refreshing: yet they would not hear.
But the word of the Lord was unto them precept upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little; that they might go, and fall backward, and be broken, and snared, and taken." Isaiah 28:9-13
When you read in the Old Testament and when you need to look up a word, look it up in Hebrew. The Old Testament was originally written in Hebrew versus the New Testament, in Greek. But anyway, I really like how she approaches this bible verse and takes it one verse at a time. Each verse holds so much depth and we truly need to digest what God is trying to convey to us. His Word truly is a hidden treasure, the true meat or big treasure is underneath the surface. Hope you guys find encouragement from this video too.