Afterward he appeared unto the
eleven as they sat at meat, and upbraided them with their unbelief and
hardness of heart, because they believed not them which had seen him
after he was risen.
-- Mark 16:14
And Luke agrees with this:
And returned from the sepulchre, and told all these things unto the eleven, and to all the rest. ... And their words seemed to them as idle tales, and they believed them not.
-- Luke 24:9,11
Even in Matthew at least some of the eleven doubt, even after seeing him alive:
Then the eleven disciples went away into Galilee, into a mountain where Jesus had appointed them. And when they saw him, they worshipped him: but some doubted.
-- Matthew 28:16f.
