take (someone/something) on faith

to believe someone or something without proof.

You will have to take it on faith that the information I am asking for is really important.

• be on the safe side
• be on the same wavelength
• be on the scrap heap
• be on the side
• be on the ... side
• be on the side of the angels
• be on the skids
• be on the square
• be on the threshold of
• be on the threshold of doing something
• be on the threshold of something
• be on the tip of tongue
• be on the tip of your tongue
• be on the wagon
• be on the warpath
• be on the wing
• be on the wrong end of
• be on the wrong end of something
• be on the wrong side of
• be on the wrong track
• be on thin ice
• be on to a good thing
• be onto a winner
• be on top of the world
• be on uppers