Ps. 19:14 May the words of my mouth and the meditation of my heart
be pleasing in your sight, O LORD, my Rock and my Redeemer.
Ps. 28:1 To you I call, O LORD my Rock; do not turn a deaf ear to
me. For if you remain silent, I shall be like those who have gone down to the pit.
Ps. 28:2 Hear my cry for mercy as I call to you for help, as I lift up my
hands towards your Most Holy Place.
Ps. 42:9 I say to God my Rock, Why have you forgotten me?
Why must I go about mourning, oppressed by the enemy?
Ps. 62:1 My soul finds rest in God alone; my salvation comes from him.
Ps. 62:2 He alone is my rock and my salvation; he is my fortress,
I shall never be shaken.
b'shem Y'shua
And yet, Christ Himself, knowing those Scritpures by rote, still named Peter, "Rock." I think I'll rely on Christ naming someone "rock" over your interpretation of it.