Ruth 4:17 directly names Obed, Jesse, and David, showing David's Moabite ancestry through Ruth, the reason he turns to Moab.

Ruth 4:10 records Boaz marrying Ruth the Moabitess, making her David's great-grandmother and linking David to Moab.

Ruth 1:1-4 tells of Naomi's family in Moab, establishing the Moabite connection that explains why David seeks refuge there for his parents.

Matthew 15:4-6 shows Jesus condemning those who neglect parents using Corban, contrasting with David's proactive care for his parents.

Genesis 47:11 shows Joseph settling his family in Egypt; similarly David provides for his parents in Moab — both acts of filial care in exile.

Exodus 20:12 commands honoring parents; David's request to protect his parents is a direct application of this commandment.

1 Timothy 5:4 instructs caring for one's own family; David's action exemplifies this NT principle of honoring parents.