1)
Above (12:22-24), it says that Shemayah ha'Navi stopped Rechav'am from fighting against Yisrael!
1.
Radak: This was at the beginning of Yaravam's reign; Rechav'am thought to return the [entire] kingship to himself. Then they refrained, for they heard that [the split] was from Hashem. Afterwards, there was war between them.
