"The teacher should constantly aim at simplicity and effectiveness. He should teach largely by illustration, and even in dealing with older pupils should be careful to make every explanation plain and clear. Many pupils well advanced in years are but children in understanding. Ed 233.1"
"I have fed you with milk, and not with meat: for hitherto ye were not able to bear it, neither yet now are ye able."
Both passages address the need to tailor instruction to the learner's level of understanding. 1 Corinthians 3:2 uses the metaphor of milk versus solid food, while the EGW quote speaks of simplifying explanations for those who are 'but children in understanding.' This is a direct principle of teaching.
"The teacher in his work is dealing with things real, and he should speak of them with all the force and enthusiasm which a knowledge of their reality and importance can inspire. Ed 233.3"
"Not slothful in business; fervent in spirit; serving the Lord;"
Both passages encourage enthusiasm and fervor in one's work. Romans 12:11 speaks of being 'fervent in spirit,' while the EGW quote emphasizes speaking with 'force and enthusiasm' inspired by the reality and importance of the subject matter. This is a clear application of the principle.
"Every teacher should see to it that his work tends to definite results. Before attempting to teach a subject, he should have a distinct plan in mind, and should know just what he desires to accomplish. He should not rest satisfied with the presentation of any subject until the student understands the principle involved, perceives its truth, and is able to state clearly what he has learned. Ed 233.4"
"Let all things be done decently and in order."
Both passages emphasize the importance of order and planning. 1 Corinthians 14:40 calls for 'all things be done decently and in order,' while the EGW quote stresses having a 'distinct plan in mind' and ensuring the student understands the material. The EGW passage is a specific application of the general principle of orderliness.