“Thou shalt make no covenant with them,” God had said; and those who had recently rededicated themselves to the Lord at the altar set up before the ruins of His temple, realized that the line of demarcation between His people and the world is ever to be kept unmistakably distinct. They refused to enter into alliance with those who, though familiar with the requirements of God’s law, would not yield to its claims. {PK 570.1}
The principles set forth in Deuteronomy for the instruction of Israel are to be followed by God’s people to the end of time. True prosperity is dependent on the continuance of our covenant relationship with God. Never can we afford to compromise principle by entering into alliance with those who do not fear Him. {PK 570.2}

Rome never changes. Her principles have not altered in the least. She has not lessened the breach between herself and Protestants; they have done all the advancing. But what does this argue for the Protestantism of this day? It is the rejection of Bible truth which makes men approach to infidelity. It is a backsliding church that lessens the distance between itself and the Papacy. – ST February 19, 1894