Abraham’s example proves that the only way to be right with God is through faith in Jesus Christ, not by works, ritual, law, or the what we can now see.
1 Samuel ends on a sad but hopeful note with Saul killed and David waiting in the wings, but even David and the rest of the kings of Judah were preparation for the ideal Messiah King.
Three incidents in the life of David illustrate the principle that believers should not pay evil for evil but overcome evil with good while trusting the Lord and letting his hand save.