Liberality: should be Exercised: According to Ability

And you shall celebrate the Feast of Weeks to the LORD your God with a freewill offering that you give in proportion to how the LORD your God has blessed you,

Everyone must appear with a gift as he is able, according to the blessing the LORD your God has given you.

On the first day of every week, each of you should set aside a portion of his income, saving it up, so that when I come no collections will be needed.