'Immovable' in the Bible

But they struck a sandbar and ran the ship aground. The bow jammed fast and remained immovable, while the stern began to break up by the pounding of the waves.

Therefore, my dear brothers, be steadfast, immovable, always excelling in the Lord’s work, knowing that your labor in the Lord is not in vain.

But resist him, be firm in your faith [against his attack—rooted, established, immovable], knowing that the same experiences of suffering are being experienced by your brothers and sisters throughout the world. [You do not suffer alone.]