How to create a memorable statement

We cannot expect our hearers to remember everything that we say to them. But how can we increase the chances that they might be able to call to mind, and perhaps benefit at a later date, some of the key ideas that we wish to communicate?
In other words, what are some of the ways in which we can create ‘sticky statements’?
Here’s a helpful acrostic on the word PREACH:
Picture – Is there a word picture or metaphor?
Example: You are the light of the world.
Rhyme – Can I use a rhyme to make it memorable?
Example: There is no win in comparison.
Echo – Can I repeat words or sounds to help it stick?
Example: Do for one what you wish you could do for everyone.
Alliteration – Can I use words that start with the same letter to drive it home?
Example: Your soul is more important than your stuff.
Contrast – Can I say 2 opposite words or ideas?
Example: Whoever loses his life for my sake will find it.
Hook – How can I naturally repeat my statement throughout the sermon to make it stick?
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