When Adam had lived 130 years, he fathered a son in his own likeness, after his image, and named him Seth. The days of Adam after he fathered Seth were 800 years; and he had other sons and daughters. Thus all the days that Adam lived were 930 years, and he died.
When Seth had lived 105 years, he fathered Enosh. Seth lived after he fathered Enosh 807 years and had other sons and daughters. Thus all the days of Seth were 912 years, and he died.
When Enosh had lived 90 years, he fathered Kenan. Enosh lived after he fathered Kenan 815 years and had other sons and daughters. Thus all the days of Enosh were 905 years, and he died.
When Kenan had lived 70 years, he fathered Mahalalel. Kenan lived after he fathered Mahalalel 840 years and had other sons and daughters. Thus all the days of Kenan were 910 years, and he died.
When Mahalalel had lived 65 years, he fathered Jared. Mahalalel lived after he fathered Jared 830 years and had other sons and daughters. Thus all the days of Mahalalel were 895 years, and he died.
When Jared had lived 162 years he fathered Enoch.
Genesis 5:3-18
It was also about these that Enoch, the seventh from Adam, prophesied, saying, "Behold, the Lord comes with ten thousands of his holy ones,"
Jude 14
The Claim: Genesis 5 shows that Enoch is 6th in line after Adam, yet Jude 14 claims Enoch is the 7th. That's a contradiction.
The Explanation: Jude 14 uses the phrase "seventh from Adam." The contradiction claim is looking at the phrase "seventh from Adam" to mean the seventh that has come after Adam. The claim looks at Genesis 5 as if Enoch is 6th in line, but this places Adam in a position of 0 instead of 1. This would be the order that the contradiction claim is picturing:
0. Adam
1. Seth
2. Enosh
3. Kenan
4. Mahalalel
5. Jared
6. Enoch
However, it makes no sense to list Adam as zero in line. There's no such thing as a zero place in line. No one finishes a race in zero place, and likewise, there's no zero place in someone's family history. Therefore, it would be proper to put Adam as number 1 on this list, and when you do, here is the result.
1. Adam
2. Seth
3. Enosh
4. Kenan
5. Mahalalel
6. Jared
7. Enoch
This is also the order that is listed in 1 Chronicles 1:1-3. The phrase "seventh from Adam," as found in Jude 14, is referring to Adam as 1st in a line of family ancestry, and Enoch is 7th in that line. There is no contradiction here.