Matthew Poole and continuators on 2 Corinthians 9:13

13 Whilst by the experiment of this ministration , they glorifie God for your professed subjection unto the gospel of Christ , and for your liberal distribution unto them, and unto all men :

Upon their receiving of what you sent them,

they will see how ready you are to obey the Gospel of Christ, (which hath in so many places called you to this duty) and this will give them occasion of blessing God, who in the day of his power, hath made such a willing people, willing at Gods command and in consideration of the Love of Christ, to strip themselves to cloath his naked Members, to restrain their own appetites to feed them. The Grace of God bestowed on others, is matter of great thanksgiving to every gracious heart.

Another cause of thanksgiving will be Gods moving your hearts towards them; they will see reason to bless God, who hath raised them up such friends in their great straits, so as they will both bless God on your behalf, for his Grace bestowed on you, that out of the Gentiles he hath picked out a people so subject to the Law of his Gospel; and also on their own behalf, that God hath stirred up a people to compassionate them in their deep distresses.