A cornerstone is the first foundation stone that supports a building's structure (see Job 38:6; Psalm 118:22; Isaiah 28:16; Ephesians 2:20).
Just as a tent peg secures a tent to the ground, Judah will provide future leaders to stabilize the Hebrew nation.
Many see the cornerstone, tent peg, and bow for battle as titles for the Messiah (compare Isaiah 22:20–23; Zechariah 9:13).