eyes

Numbers 10:31
"Please do not leave us, " Moses said, "since you know where we should camp in the wilderness, and you can serve as our eyes.

Matthew 11:5
The blind receive sight, the lame walk, the lepers are cleansed, the deaf hear, the dead are raised, and good news is preached to the poor.

1 Corinthians 12:12
The body is a unit, though it is comprised of many parts. And although its parts are many, they all form one body. So it is with Christ.