 Williams sings the lead vocals while Beyoncé and Rowland sing their respective solo verses and serve as background vocalists throughout the song . Eric Corpus from The Christian Post interpreted the song 's lyrics as a praise of God 's sovereignty and " magnetism " of Jesus ' love . " Say Yes " opens with a message of faith as Williams sings the first lines , " I 'm not worried about a thing / ' Cause I know you are guiding me / Where you lead me / Lord I will go / I have not fear / ' Cause I know who 's in control . " The chorus is constructed as a call and response with the trio repeatedly praising Jesus through the lines " When Jesus say yes , nobody can say no ! " while being backed by a choir which repeats the verses . 
