Given Abigail’s conviction that her husband Nabal would come to harm following his sin, she might have been asking David to take her as his wife in marriage once her husband had passed. Alternatively, she was asking for his favour when he did eventually rise to power, that he would act to look after her in some way.
31 my lord shall have no cause of grief or pangs of conscience for having shed blood without cause or for my lord working salvation himself. And when the LORD has dealt well with my lord, then remember your servant.”