After admitting that his enemies had -almost- made an end of him in the last octave -vs. 81-88-, the psalmist rebounds with one of the great statements of faith in the Bible- -Forever, O Lord, Your word is settled in heaven.----After tossing about on a sea of trouble, the Psalmist here leaps to shore and stands upon a rock. Jehovah's word is not fickle nor uncertain- it is settled, determined, fixed, sure, unmovable.--Spurgeon--The psalmist is regaining his bearings after a period of doubt. He is saved, both temporally and eternally, by the Word of God.