This is one of the Bible's clearest statements of the principle of reaping what you sow. Those who scheme to bring others down find their schemes rebounding upon themselves. Evil devised against others is not morally neutral — it carries a returning force. God's moral order ensures that wickedness eventually turns on its author.
Memory phrase: Evil traps come back.
Talk about it: What happens to people who set traps for others?
Prayer: God, keep me from ever planning harm for others.