Charles Spurgeon Commentary Romans 15:27-28

"Yea, it hath been their good pleasure; and their debtors they are. For if the Gentiles have been made partakers of their spiritual things, they owe it [to them] also to minister unto them in carnal things. When therefore I have accomplished this, and have sealed to them this fruit, I will go on by you unto Spain." — Romans 15:27-28 (ASV)

For if the Gentiles have been made partakers of their spiritual things, their duty is also to minister unto them in carnal things. When therefore I have performed this, and have sealed to them this fruit,—

That is, "when I have delivered the money, and obtained a receipt in full for it; when I have discharged my duty in this matter,".