The 'perfect hatred' David describes is a complete moral rejection of evil, not personal vindictiveness. The lesson for children is total commitment to God's ways — holding nothing back in our allegiance to Him.
Memory phrase: I fully choose God's side.
Talk about it: What does it mean to be completely on God's side? Is there anything that makes it hard?
Prayer: Lord, help me hold nothing back. I want to be completely Yours — all the way, every day.