In God I will praise his word, in God I have put my trust; I will not fear what flesh can do unto me.
In God I will praise his word - i:e., trusting "in God, I will praise His word." So Psalms 56:10 expands this clause. Maurer understands even in before "His word," thus-`In God I trust, (even in) His word.' Compare Psalms 44:8. I prefer the English version. "His word" here is His word of promise (Psalms 33:4; Psalms 119:25).
In God I have put my trust; I will not fear what flesh can do unto me - repeated in Psalms 56:11, with the slight alteration of "man" into "flesh." (Isaiah 31:3; Isaiah 11:6). Man is but weak flesh; perishing 'like the grass;' what real hurt, then, can he do to one trusting in, and therefore protected by God? (Psalms 118:6; Hebrews 13:6.)