A frequent misinterpretation views this as Jonathan selfishly securing his personal safety from Saul's wrath, reducing it to a fearful bargain rather than a selfless act of faith where he prioritizes God's anointed David while entrusting his lineage to covenant mercy. Another error is to apply it legalistically as a blanket command for unconditional favoritism toward descendants regardless of their actions, ignoring the broader context of mutual covenant faithfulness and divine justice exemplified later in David's treatment of Mephibosheth.
I Samuel 20:14
King James Version (1769)
14 And thou shalt not only while yet I live shew me the kindness of the Lord, that I die not:
This verse records Jonathan's covenant plea to David, urging him to extend the steadfast kindness of the Lord by sparing Jonathan's life during his lifetime and, more enduringly, by showing mercy to Jonathan's entire household forever, even after God eliminates David's enemies. It underscores the biblical theme of covenant loyalty that mirrors God's faithful love, transcending individual lives and emphasizing intergenerational grace and protection within righteous alliances.