"A Closing Exhortation. —Shall the powers of mind and soul be misapplied? Shall opportunities be lost? Shall a form and routine be gone through day after day, with nothing gained? O, awake, awake, teachers and pupils, before it is too late! Awake before you hear from pale and agonized lips the terrible wail, “The harvest is past, the summer is ended, and we are not saved!” CE 247.1"
"The harvest is past, the summer is ended, and we are not saved."
EGW directly quotes Jeremiah 8:20, using it as a warning about the consequences of neglecting spiritual preparation and salvation.
"others. When you as instructors commit yourselves unreservedly to Jesus, for him to lead, to guide, to control, you will not fail. Teaching your students to be Christians is the greatest work before you. Go to God; he hears and answers prayers. Put from you questionings, doubts, and unbelief. Let no harshness come into your teaching. Be not too exacting, but cultivate tender sympathy and love. Be cheerful. Do not scold, do not censure too severely; be firm, be broad, be Christlike, pitiful, courteous. “Whatsoever a man soweth, that shall he also reap.” CE 247.2"
"Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap."
EGW directly quotes Galatians 6:7, applying the principle of sowing and reaping to the context of teaching and the impact of a teacher's actions on their students.