"What an exhibition was this to be reported by the students to their distant friends and acquaintances! It was a witness that showed, not what God has accomplished in the school, but what Satan had accomplished. Serious is the consequence of even one such departure from the instruction that God has given concerning our schools. Once the barriers are broken down, the advance of the enemy will be marked, unless the Lord shall humble hearts and convert minds. CT 352.1"
"Your glorying is not good. Know ye not that a little leaven leaveneth the whole lump?"
The EGW passage discusses the negative impact of a single departure from God's instruction, and how it can spread like leaven, mirroring the warning in 1 Corinthians 5:6 about the corrupting influence of 'a little leaven'.
"The effort to regain that which was lost by the proceedings of that afternoon cost the teachers much labor. They were severely tried. With the students there was seen a desire for further pleasure and less regard for the instruction of God's word. The Lord of heaven was thus dishonored, and the indulgence of the desires of the human heart in sin and love of pleasure was the education received. CT 352.2"
"Traitors, heady, highminded, lovers of pleasures more than lovers of God;"
The EGW passage discusses the students' desire for pleasure and less regard for God's word, which directly parallels the idea of being "lovers of pleasures more than lovers of God" in 2 Timothy 3:4. The thematic connection is strong and relevant.