What does Psalm 93:5 mean?
Because God is the only uncreated Creator, and sovereign over all things (Psalm 93:1–2), nothing can overpower Him (Psalm 93:3–4). We can look back on His many miracles to see proof of this. We can also see evidence that the Lord keeps his promises. So, when God "decrees" something, we can trust it with absolute confidence (John 17:17).A key ploy of Satan is convincing human beings to doubt God's truth (Genesis 3:1, 4). False prophets thrive on lies contrary to Scripture (2 Peter 2:1). Such lies are among the most damaging any person can encounter (Galatians 1:8).
Just as God's presence infused holiness into His temple, so His holiness dwells in the New Testament temple: His people. A perfectly unique and uncreated God is truly "holy:" separated and set apart from everything else. This is why the Lord calls believers to be "holy" and separate themselves from sinful aspects of the world (1 Peter 1:3–25).