One might suppose that such a holy God would not tolerate any sinner. However, God tempers holiness with mercy. Even though the Israelites sinned, God still answered the prayers of their intercessors, specifically Moses, Aaron, and Samuel. The picture of God speaking to His people from the pillar of cloud combines the concepts of God's holiness and mercy graphically. However, God was not so merciful that He failed to discipline the sinners. This balanced view of God gives hope for the future when sinners will stand before Him. Therefore God's people should exalt Him and worship Him at His holy mountain, Zion.164
The prospect of a perfectly holy God ruling over sinful humans in undeviating justice is a terrifying one. This psalm helps the godly appreciate how God will reign. He will do so as He has dealt with His people throughout their history, namely by extending mercy without compromising His holiness.