Contradiction with Matthew 24:36
This verse suggests that no one knows the timing of future events, whereas 2 Thessalonians 2:6 implies that the timing is known.
Matthew 24:36: But of that day and hour knoweth no [man], no, not the angels of heaven, but my Father only.
Contradiction with Acts 1:7
This verse states that the knowledge of timing is reserved only for God, contradicting the idea of holding knowledge of the times in 2 Thessalonians 2:6.
Acts 1:7: And he said unto them, It is not for you to know the times or the seasons, which the Father hath put in his own power.
Contradiction with 1 Thessalonians 5:2
It describes the coming of the day of the Lord as unexpected, opposing the idea of restraining knowledge or events as in 2 Thessalonians 2:6.
1 Thessalonians 5:2: For yourselves know perfectly that the day of the Lord so cometh as a thief in the night.