28 So after I have completed this task and have made sure that they have received this contribution, I will go to Spain and visit you on the way.

Read Romans 15:28 Using Other Translations

When therefore I have performed this, and have sealed to them this fruit, I will come by you into Spain.
When therefore I have completed this and have delivered to them what has been collected, I will leave for Spain by way of you.
As soon as I have delivered this money and completed this good deed of theirs, I will come to see you on my way to Spain.