lend credence to something formal
lend weight to something
lend credibility to something

This lends further weight to our decision to vote against.

On the other hand, there are some facts that lend weight to the father's story.

As this action lent weight to my form, I lost some height, but not much.

The regional meetings will also lend new weight to our work.

It was a quality of the hour, neither night nor day, that lent every second its weight.

When more means bigger, it lends weight to art, too.

The quiet confidence in the man's voice lent weight to his statement.

It's the first time a leading drinks company has lent its weight to such a campaign.

George demanded, stepping out of the house to lend weight to his order.

But they lend the movie enough weight to keep it moored to the ground.