psalm 119 resh - why to trust that the Lord will help?

 In Psalm 119: 153-160 , we read:

Take a good look at my trouble, and help me—

    I haven’t forgotten your revelation.

Take my side and get me out of this;

    give me back my life, just as you promised.

“Salvation” is only gibberish to the wicked

    because they’ve never looked it up in your dictionary.

Your mercies, God, run into the billions;

    following your guidelines, revive me.

My antagonists are too many to count,

    but I don’t swerve from the directions you gave.

I took one look at the quitters and was filled with loathing;

    they walked away from your promises so casually!

Take note of how I love what you tell me;

    out of your life of love, prolong my life.

Your words all add up to the sum total: Truth.

    Your righteous decisions are eternal.

The psalmist expects the Lord's help because:

. he remembers the revelavtion from the Lord.

. he trusts that the Lord fullfill his promises while the wicked don't.

. he loves the Lord while the wicked don't.

. he trusts that the Lord is merciful. 

. he keeps in the direction gave by the Lord.

. he knows that the words of the Lord are the Truth.