Isaiah 55:3 → 2 Samuel 7:12-16

"Incline your ear and come to Me; listen, so that your soul may live. I will make with you an everlasting covenant—My loving devotion promised to David" (Isa 55:3). The prophet's phrase — חַסְדֵי דָוִד הַנֶּאֱמָנִים, chasdei David hanne'emanim, "the faithful loving devotions of David" — welds together the two guarantee-clauses of Nathan's oracle in their own vocabulary: the ḥesed (חֶסֶד, H2617) of 2 Samuel 7:15, "My loving devotion will never be removed from him," and the ne'eman (אָמַן, H539) of 7:16, "Your house and kingdom will endure [H539] forever." Both Strong's numbers stand in both texts, verified at source — Isaiah is not coining a formula but compressing the oracle's unconditional core into three words. The Reference Type is Allusion because the reuse carries no citation formula, yet names David and redeploys the covenant's two load-bearing lexemes together, a verbal signature too specific for mere echo. The Connection Method is Promise-Fulfillment, leading, because Isaiah 55:3 is the promise-side reactivation the ATN's exile-crisis section requires: spoken to a generation for whom the throne has gone dark, it re-pledges the still-outstanding oracle rather than reporting its fulfilment — and the fulfilment lands exactly where Acts 13:34 places it, in the resurrection of the Son of David who "will never return to decay." Longitudinal Theme rides secondary, because 55:3 is a station on the covenant-recital thread that runs from Psalm 89:3-4 and Psalm 132:11-12 through David's own dying summary (2 Sam 23:5) to Gabriel's annunciation. And the verse performs the covenant's democratization: what 2 Samuel 7 pledged to one king, Isaiah offers to the plural "you" — the same extension the surrounding verses make explicit (vv. 4-5, the witness-leader given to the peoples) and that Paul completes at 2 Corinthians 6:18. The telos is in the chapter's own opening imperatives: the everlasting covenant is not served as a legal instrument but as a feast — "come, buy wine and milk without money… eat what is good, and your soul will delight in the richest of foods" (55:1-2). The sure mercies of David are set on the table for the thirsty, so that the covenant kept in the risen King becomes the soul's food and delight, not merely its security.