Psalm 151
This Psalm is a genuine one of David, though supernumerary, composed when he fought in single combat with Goliath.

Psalm 151:1 I was small among my brethren, and youngest in my father’s house: I tended my father’s sheep.

Psalm 151:2 My hands formed a musical instrument, and my fingers tuned a psaltery.

Psalm 151:3 And who shall tell my Lord? the Lord himself, he himself hears.

Psalm 151:4 He sent forth his angel, and took me from my father’s sheep, and he anointed me with the oil of his anointing.

Psalm 151:5 My brothers were handsome and tall; but the Lord did not take pleasure in them.

Psalm 151:6 I went forth to meet the Philistine; and he cursed me by his idols.

Psalm 151:7 But I drew his own sword, and beheaded him, and removed reproach from the children of Israel.