Tafsiran Bilangan 32:23: Sforno, Or HaChaim & Rav Hirsch

'הנה חטאתם לה, by your failure to live up to your undertaking it will become clear that you had sinful intent from the beginning.. הנה חטאתם לה', by your failure to live up to your undertaking it will become clear that you had sinful intent from the beginning.

ואם לא חעשון כן הנה חטאתם, "But if you will not do so, behold you have sinned against the Lord, etc." This appears problematical. We would have expected Moses to say only that if these two tribes did not keep the bargain they would not be given the lands on the East Bank. However, the meaning of these words is that if the two tribes would not accept Moses' command to treat the conquest of the West Bank as a מלחמת חובה, an obligatory war fought in order to take revenge on the enemies of G'd, they would have sinned even if they did cross the Jordan fully armed. Moses spoke of that sin in the past tense, i.e. "your sin would commence already at this time."

V. 23. חטאתכם אשר תמצא, die Sünde trifft in ihren Folgen den Sünder. Außer dem, daß sie das transjordanische Land nicht bekommen, wenn sie die Bedingung nicht lösen (V. 30), trifft sie dann auch wegen Wortbrüchigkeit die Schuld.