Blessed are the feet of those that bring good news
I think you may be thinking of a different phrase! The phrase "Blessed are the feet of those that bring good news" is not a well-known biblical quote or phrase.
However, I think you may be thinking of the phrase "Blessed are the feet of those who bring good tidings, who publish peace, who bring good news, who say to Zion, 'Your God reigns!'" (Isaiah 52:7, NIV). This verse is from the book of Isaiah in the Old Testament and is a prophecy about the coming of the Messiah.
In this verse, the prophet Isaiah is describing the joy and celebration that will come when the Messiah arrives to bring salvation and peace to God's people. The phrase "Blessed are the feet" is a metaphorical expression of praise and honor for those who bring good news, and is often seen as a reference to the feet of the Messiah, who will bring salvation and redemption to God's people.
I hope that helps!