The nineteenth book in the Bible is the Book of Psalms. It contains 150 songs, or psalms, which were written by various authors over a period of 1,000 years - from the time of Moses to the return of the Jews from their exile in Babylon. The psalms have a variety of styles and themes, from praise and worship to sorrow and penitence.
Psalm 3, written by David after the revolt of his son, Absolom, shows how David was protected by God from his enemies:
Psalm 3:4-6
"I cried unto the Lord with my voice,
and he heard me out of his holy hill. Selah.
I laid me down and slept;
I awaked; for the Lord sustained me.
I will not be afraid of ten thousands of people,
that have set themselves against me round about"