Contradiction with James 1:6
This verse emphasizes asking without doubt, whereas Genesis 24:43 describes seeking a sign for assurance.
James 1:6: But let him ask in faith, nothing wavering. For he that wavereth is like a wave of the sea driven with the wind and tossed.
Contradiction with Matthew 4:7
This verse advises not to test God, while Genesis 24:43 involves a sign from God as a test.
Matthew 4:7: Jesus said unto him, It is written again, Thou shalt not tempt the Lord thy God. [tempt: or, try, or, put to trial, or, proof]