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

Like a computer, it may lend credence to false data.

This has lent credence to claims that much of the weight lost is water.

I'm not going to lend credence to anything like guys giving up.

A series of interviews with key party figures may lend further credence to this charge.

Therefore, we lend credence to the king's assessment of England.

Elway will lend further credence to this theory in the big game.

Another study reported recently in Nature appeared to lend credence to this view.

Obviously, he said it to lend credence to his diagnosis.

Whatever its source, later generations lent credence to the narrative.

And the research lends credence to the idea of killer trees.