C. F. Keil and Franz Delitzsch on Psalms 25:3

Psa 25:3

That wherewith the praying one comforts himself is no peculiar personal prerogative, but the certain, joyous prospect of all believers: ἡ ἐλπίς ου ̓ καταισχύνει, Rom 5:5. These are called קויך (קוה participle to קוּה ot elp, just as דּבר is the participle to דּבּר). Hope is the eye of faith which looks forth clear and fixedly into the future. With those who hope in Jahve, who do not allow themselves to be in any way disconcerted respecting Him, are contrasted those who act treacherously towards Him (Psa 119:158, Aq., Symm., Theodot. οἱ ἀποστατοῦντες), and that ריקם, i.e. - and it can only mean this-from vain and worthless pretexts, and therefore from wanton unconscientiousness.