Mark 11:29-31

New Revised Standard Version, Anglicised

²⁹ Jesus said to them, ‘I will ask you one question; answer me, and I will tell you by what authority I do these things. ³⁰ Did the baptism of John come from heaven, or was it of human origin? Answer me.’ ³¹ They argued with one another, ‘If we say, “From heaven”, he will say, “Why then did you not believe him?”