Mark 4:25
For he that hath, to him shall be given: and he that hath not, from him shall be taken even that which he hath.
Cross-reference
Matthew 13:12 repeats the same saying verbatim — the principle of having and losing.
Matthew 25:28 enacts the principle: the one talent is taken and given to the ten-talent servant.
Matthew 25:29 states the identical proverb about more given to those who have.
Luke 8:18 parallels the saying with a warning about how one hears — same principle.
In Luke 19:24-26, the same saying appears in the parable of the ten minas, rewarding faithful service and taking from the unfaithful.
Luke 19:26 repeats the exact saying about the one who has and has not, directly mirroring the principle in Mark.
John 15:2 echoes the principle: fruitful branches are pruned to bear more, while unfruitful ones are removed — similar to 'having' and 'not having'.