Contradiction with Matthew 7:1-2
Mark 4:24 suggests that you should be careful of what you hear and measure, whereas Matthew 7:1-2 implies that judging others will result in being judged by the same measure.
Matthew 7:1-2: Judge not, that ye be not judged.
Contradiction with Luke 6:38
Mark 4:24 suggests measuring hearing carefully, while Luke 6:38 stresses giving generously to receive generously, which can be seen as contradictory in terms of what is received.
Luke 6:38: Give, and it shall be given unto you; good measure, pressed down, and shaken together, and running over, shall men give into your bosom. For with the same measure that ye mete withal it shall be measured to you again.
Contradiction with James 2:13
Mark 4:24 emphasizes careful hearing, whereas James 2:13 highlights mercy over judgment, suggesting a differing approach to applying measures.
James 2:13: For he shall have judgment without mercy, that hath shewed no mercy; and mercy rejoiceth against judgment. [rejoiceth: or, glorieth]
Paradox #1
The contradiction or inconsistency might be in how the verse suggests that the measure you use for others will be used for you. Some could see this as conflicting with notions of unconditional love or forgiveness, where actions and judgments are not reciprocated or measured, but given freely.