Adam Clarke on 2 Corinthians 9:9

He hath dispersed abroad - Here is still the allusion to the sower. He sows much; not at home merely, or among those with whom he is acquainted, but abroad - among the strangers, whether of his own or of another nation. The quotation is taken from Psa 112:9.

He hath given to the poor - This is the interpretation of he hath scattered abroad; and therefore it is said, his righteousness remaineth for ever - his good work is had in remembrance before God. By righteousness we have already seen that the Jews understand almsgiving. See the note on Mat 6:1.