1)
If Yirmeyah wrote and signed the document, it is not a proof!
1.
Radak: He sealed it with his signet; witnesses saw the Kinyanim and signed in the document.
2)
Why did he summons witnesses?
1.
Radak: Refer to 32:10:1:1.
2.
Malbim: They were for the document, and they also saw the Kinyan Kesef.
3)
Verse 9 already taught that he weighed the money! Why is this repeated?
1.
Radak: He weighed it in front of the witnesses, lest there be a dispute about the weight.
