In the last days: God promised to act in history to establish his kingdom.
The mountain of the house of the LORD refers to Mount Zion in Jerusalem, where Solomon’s temple was built (see 2 Samuel 24:18–25). It reminds us of Mount Sinai, the mountain of God (Exodus 3:1; Numbers 10:33), where God appeared. The mountain of the Lord is important as the place where God reveals his identity and offers fellowship.
teach us His ways … His paths: The wisdom of God’s laws and the knowledge of his ways will give life to the nations (Deuteronomy 4:6; 32:47).