Psalm 56:13 New English Translation

¹³when you deliver^[a] my life from death.
You keep my feet from stumbling,^[b]
so that I might serve^[c] God as I enjoy life.^[d]

Psalm 56:13 tn The perfect verbal form is probably future perfect; the psalmist promises to make good on his vows once God has delivered him (see Pss 13:5; 52:9). (2) Another option is to understand the final two verses as being added later, after the Lord intervened on the psalmist’s behalf. In this case one may translate, “for you have delivered.” Other options include taking the perfect as (3) generalizing (“for you deliver”) or (4) rhetorical (“for you will”).
Psalm 56:13 tn Heb “are not my feet [kept] from stumbling?” The rhetorical question expects the answer, “Of course they are!” The question has been translated as an affirmation for the sake of clarification of meaning.
Psalm 56:13 tn Heb “walk before.” For a helpful discussion of the background and meaning of this Hebrew idiom, see M. Cogan and H. Tadmor, II Kings (AB), 254; cf. the same idiom in 2 Kgs 20:3; Isa 38:3.
Psalm 56:13 tn Heb “in the light of life.” The phrase is used here and in Job 33:30.

New English Translation (NET)