John 6: 29, 30: “’This is the work of God, that you believe in Him Whom He has sent.’ They said therefore to Him, ‘What then do you do for a sign, that we may see, and believe you?’” Jesus had already told them (v. 26) that they were not looking for signs, but blessings. One does not need to see to believe, as the people were assuming here. One can believe from an inner witness, a work of the Holy Spirit, whether they see or not. Signs can be faked; an inner witness cannot. Jesus Himself said (John 20: 29) that belief stemming from within, rather than visible signs, is more blessed.