2 Corinthians 8:9
“For you know the grace of our Lord, that though He was rich, yet for our sakes He became poor, that we through His poverty might become rich.”
'For have in mind,' says he, 'ponder and consider the grace of God and do not lightly pass it by, but aim at realizing the greatness of it both as to extent and nature, and you will grudge nothing of yours. He emptied Himself of His glory that you, not through His riches but through His poverty, might be rich. If you believe not that poverty is productive of riches, have in mind your Lord and you will doubt no longer. For had He not become poor, you would not have become rich. For this is the marvel, that poverty has made riches rich.' And by riches here he means the knowledge of godliness, the cleansing away of sins, justification, sanctification, the countless good things which He bestowed upon us and purposes to bestow. And all these things accrued to us through His poverty. What poverty? Through His taking flesh on Him and becoming man and suffering what He suffered. And yet he owed not this, but thou dost owe to Him.
Source: Homilies on Second Corinthians (New Advent)