The memory that changed everything
This example builds from a single childhood memory and uses it to frame the entire speech. The emotion is earned, not stated. The groom is welcomed specifically, not generically.
"When Emma was four years old, she had a phase where she refused to hold my hand crossing the street. She was certain she could do it herself. She was wrong, and she knew she was wrong, and she held my hand anyway -- but only if she thought no one was watching.
I think about that a lot now.
She is still, in so many ways, the same person: capable of more than she lets on, too proud to admit when she needs someone, and quietly, privately grateful when the right person is there anyway.
Ryan is the right person. I watched him figure this out within the first year, which is more than most people manage in a lifetime.
What I want for your marriage is simple: be the person she holds onto when she thinks no one is watching. She will not always say she needs it. Trust me anyway.
To Emma and Ryan."
The childhood memory is small and specific. It does not announce anything; it shows something true about who she is. The advice to the groom in the close is personal, not generic.