Cross reference
John 6:36
36 but I said to you, that ye also have seen me, and ye believe not;
John 6:26
26 Jesus answered them and said, `Verily, verily, I say to you, Ye seek me, not because ye saw signs, but because ye did eat of the loaves, and were satisfied;
Luke 16:31
31 And he said to him, If Moses and the prophets they do not hear, neither if one may rise out of the dead will they be persuaded.'
John 6:30
30 They said therefore to him, `What sign, then, dost thou, that we may see and may believe thee? what dost thou work?
John 6:40
40 and this is the will of Him who sent me, that every one who is beholding the Son, and is believing in him, may have life age-during, and I will raise him up in the last day.'
John 6:64
64 but there are certain of you who do not believe;' for Jesus had known from the beginning who they are who are not believing, and who is he who will deliver him up,
John 12:37
37 yet he having done so many signs before them, they were not believing in him,
John 15:24
24 if I did not do among them the works that no other hath done, they were not having sin, and now they have both seen and hated both me and my Father;
1 Peter 1:8-9
8 whom, not having seen, ye love, in whom, now not seeing and believing, ye are glad with joy unspeakable and glorified,
9 receiving the end of your faith -- salvation of souls;