Mark 11:29 in the World English Bible
Jesus said to them, “I will ask you one question. Answer me, and I will tell you by what authority I do these things.
Context
28 And say unto him, By what authority doest thou these things? and who gave thee this authority to do these things?
29 And Jesus answered and said unto them, I will also ask of you one question, and answer me, and I will tell you by what authority I do these things.
30 The baptism of John, was it from heaven, or of men? answer me.