Therefore will not we fear - Our confidence in God shall be unshaken and abiding. Having Him for our refuge and strength Psalm 46:1, we can have nothing to fear. Compare Psalm 56:3.
Though the earth be removed - literally, “in the changing of the earth;” that is, though the earth should be changed. This may either mean, Though the earth should change its place or its very structure in these convulsions; or, though it should perish altogether. Compare Psalm 102:26. The idea is, that they would not be afraid, though the convulsions then occurring in the world should be continued, and should be extended so far as to destroy the very earth itself. God would remain their friend and protector, and they would have nothing to fear.