"“Terrible as was the representation that passed before me, that which impressed itself most vividly upon my mind was the instruction given me in connection with it. The angel that stood by my side declared that God's supreme rulership, and the sacredness of His law, must be revealed to those who persistently refuse to render obedience to the King of kings. Those who choose to remain disloyal, must be visited in mercy with judgments, in order that, if possible, they may be aroused to a realization of the sinfulness of their course. LS 408.1"
"Who shall not fear thee, O Lord, and glorify thy name? for thou only art holy: for all nations shall come and worship before thee; for thy judgments are made manifest."
Both passages connect God's judgments with the manifestation of His holiness and the eventual worship of all nations. The EGW passage speaks of judgments as a means to awaken people to their sin, while Revelation 15:4 speaks of judgments leading to worship.
"“Throughout the following day I pondered the scenes that had passed before me, and the instruction that had been given. During the afternoon we journeyed to Glendale, near Los Angeles; and the following night ... I seemed to be in an assembly, setting before the people the requirements of God's law. I read the scriptures regarding the institution of the Sabbath in Eden at the close of the creation week, and regarding the giving of the law at Sinai; and then declared that the Sabbath is to be observed ‘for a perpetual covenant,’ as a sign between God and His people forever, that they may know that they are sanctified by the Lord, their Creator. LS 408.2"
"Wherefore the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations, for a perpetual covenant."
The EGW passage directly quotes and references Exodus 31:16 regarding the Sabbath as a perpetual covenant.
"“Then I further dwelt upon the supreme rulership of God above all earthly rulers. His law is to be the standard of action. Men are forbidden to pervert their senses by intemperance, or by yielding their minds to satanic influences; for this makes impossible the keeping of God's law. While the divine Ruler bears long with perversity, He is not deceived, and will not always keep silence. His supremacy, His authority as Ruler of the universe, must finally be acknowledged, and the just claims of His law vindicated. LS 408.3"
"Justice and judgment are the habitation of thy throne: mercy and truth shall go before thy face."
Both passages address God's rulership, justice, and the importance of His law. The EGW passage focuses on obedience to God's law and the consequences of disobedience, while Psalm 89:14 highlights justice and judgment as the foundation of God's throne.