'Fulfillment' in the Bible

My eyes fail [with longing, watching] for [the fulfillment of] Your promise,Saying, “When will You comfort me?”

My eyes fail [with longing, watching] for [the fulfillment of] Your salvation,And for [the fulfillment of] Your righteous word.

Let my tongue sing [praise for the fulfillment] of Your word,For all Your commandments are righteous.