"I was shown that you are in danger of getting above the simplicity of the work and of placing yourself upon the pinnacle. You feel that you need no reproof and counsel, and the language of your heart is: “I am capable of judging, discriminating, and determining between right and wrong. I will not have my rights infringed upon. No one shall dictate to me. I am capable of forming my own plans of action. I am as good as anybody. God is with me and gives me success in my efforts. Who has authority to interfere with me?” These words I heard you utter, as your case was passing before me in vision, not to any person, but as if in conversation with yourself. My attending angel repeated these words, as he pointed to you both: “Except ye be converted, and become as little children, ye shall not enter into the kingdom of heaven. Whosoever shall humble himself as this little child, the same is greatest in the kingdom of heaven.” 3T 306.3"
"Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:"
The EGW passage describes a person's self-sufficient attitude, echoing the sentiment of spiritual pride and self-reliance found in Revelation 3:17. The 'little children' quote is from Matthew 18:3, not Revelation.