9:1 I will praise thee, O LORD, with my whole heart; I will shew forth all thy marvellous works.
9:10 And they that know thy name will put their trust in thee: for thou, LORD, hast not forsaken them that seek thee.
"death of the son," is not a musical instrument but the title of the Psalm. Possibly connected with 2 Samuel 12:20 .
trust (See Scofield "Psalms 2:12") .