From Albert Barnes commentary on the bible:

Quote
It has been supposed by some that the name Dan was omitted because that tribe was early devoted to idolatry, and continued idolatrous to the time of the captivity. Of that fact there can be no doubt, for it is expressly affirmed in Jdg_18:30; and that fact seems to be a sufficient reason for the omission of the name. As being thus idolatrous, it was in a measure separated from the people of God, and deserved not to be reckoned among them; and in enumerating those who were the servants of God, there seemed to be a propriety that a tribe devoted to idolatry should not be reckoned among the number This will account for the omission


Peter

If you believe what you like in the gospels, and reject what you don't like, it is not the gospel you believe, but yourself. Augustine of Hippo