Contradiction with Matthew 24:36
While Mark 13:35 advises watchfulness at all times, Matthew 24:36 states that no one knows the exact day or hour, implying uncertainty.
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
Mark 13:35 encourages readiness for an unknown time, but Acts 1:7 suggests that such times are not for individuals to know.
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
Mark 13:35 focuses on being vigilant, whereas this verse indicates the day of the Lord will come unexpectedly like a thief in the night, suggesting unpredictability rather than constant readiness.
1 Thessalonians 5:2: For yourselves know perfectly that the day of the Lord so cometh as a thief in the night.