'Unshaken' in the Bible

He need not fear a bad report, for his heart is unshaken, since he trusts in the LORD.

For David says in reference to Him, "'I constantly fixed my eyes upon the Lord, because He is at my right hand in order that I may continue unshaken.

In view of this, I also do my best and strive always to have a clear conscience before God and before men.

Our hope for you is unshaken, because we know that as you share our sufferings, you also share our comfort.

Nevertheless, the firm foundation of God [which He has laid] stands [sure and unshaken despite attacks], bearing this seal: “The Lord knows those who are His,” and, “Let everyone who names the name of the Lord stand apart from wickedness and withdraw from wrongdoing.”

For we [believers] have become partakers of Christ [sharing in all that the Messiah has for us], if only we hold firm our newborn confidence [which originally led us to Him] until the end,

Now this phrase "once more" indicates the removal of what is shaken, that is, of created things, so that what is unshaken may remain.