NT.filter - riversident immovable:

riversident@Acts:27:41 @ But falling into a place where there were cross-currents they ran the ship aground. The bow stuck fast and remained immovable, but the stern was breaking up under the violence of the sea.

riversident@1Corinthians:15:58 @ So then, my beloved brethren, be firm, immovable, always abounding in the work of the Lord; since you know that your labor is not fruitless in the Lord.