"Like the builders of these houses on the rock, said Jesus, is he who shall receive the words that I have spoken to you, and make them the foundation of his character and life. Centuries before, the prophet Isaiah had written, “The word of our God shall stand forever” ( Isaiah 40:8 ); and Peter, long after the Sermon on the Mount was given, quoting these words of Isaiah added, “This is the word which by the gospel is preached unto you” ( 1 Peter 1:25 ). The word of God is the only steadfast thing our world knows. It is the sure foundation. “Heaven and earth shall pass away,” said Jesus, “but My words shall not pass away.” Matthew 24:35 . MB 148.1"
"The grass withereth, the flower fadeth: but the word of our God shall stand for ever."
Ellen White directly references Isaiah 40:8 in this passage.
"But the word of the Lord endureth for ever. And this is the word which by the gospel is preached unto you."
Ellen White directly references 1 Peter 1:25 in this passage.
"Heaven and earth shall pass away, but my words shall not pass away."
Ellen White directly references Matthew 24:35 in this passage.
"manifestation of His character, His law, His love, His life,—is the only foundation upon which we can build a character that will endure. MB 148.2"
"For other foundation can no man lay than that is laid, which is Jesus Christ."
The EGW quote directly echoes the sentiment of 1 Corinthians 3:11, emphasizing Christ as the foundation. It expands on what that foundation consists of (character, law, love, life), but the core idea is clearly derived from the verse.