"The mystery of godliness, opened to the mind of the minister of Christ, will raise him above earthly and sensual enjoyments. He will be a partaker of the divine nature, having escaped the corruption that is in the world through lust. The communion opened between God and his soul will make him fruitful in the knowledge of God's will, and open before him treasures of practical subjects that he can present to the people, which will not cause levity or the semblance of a smile, but will solemnize the mind, touch the heart, and arouse the moral sensibilities to the sacred claims that God has upon the affections and life. Those who labor in word and doctrine should be men of God, pure in heart and life.— Testimonies for the Church 3:241 . GW 130.1"
"Whereby are given unto us exceeding great and precious promises: that by these ye might be partakers of the divine nature, having escaped the corruption that is in the world through lust."
EGW directly alludes to 2 Peter 1:4 by using the phrase 'partakers of the divine nature, having escaped the corruption that is in the world through lust.'
"And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory."
Both passages refer to the 'mystery of godliness.' While 1 Timothy 3:16 describes the content of this mystery, EGW discusses its effect on a minister, raising him above earthly desires. There is a clear thematic connection.