'Firm' in the Bible

the head of Ephraim is Samaria,and the head of Samaria is the son of Remaliah.If you do not stand firm in your faith,then you will not stand at all.

I will drive him, like a peg, into a firm place. He will be a throne of honor for his father’s house.

On that day”—the declaration of the Lord of Hosts—“the peg that was driven into a firm place will give way, be cut off, and fall, and the load on it will be destroyed.” Indeed, the Lord has spoken.