I will never be shaken: The psalmist admits his overconfident attitude (compare Psalm 32:3–4).
my mountain stand strong: In the psalms, this phrase powerfully symbolizes stability and God's control (see Psalms 11:1; 18:7; 36:6; 46:2; 72:3; 76:4; 83:14; 97:5; 114:4, 6; 125:2).
I was dismayed: The absence of God’s favor destroys the security of the proud (compare Psalm 104:27–30).