Shared ground
This passage presents David’s return as something that still requires public, tribal agreement, not just a military outcome. The rebellion has collapsed, but the kingdom’s unity has to be signaled and rebuilt through recognized leaders (“elders of Judah”) and a public escort back across the Jordan.
The text also shows David using persuasion rather than force. He sends a message through Zadok and Abiathar, presses Judah not to lag behind others, and appeals to kinship (“my bone and my flesh”). Alongside that relational appeal, he makes a concrete political move: he offers Amasa the continuing role of army commander in place of Joab.
Where interpretation differs (only where needed)
1) What “the speech of all Israel” means (v. 11). Some read it as a formal decision or organized push from the other tribes to restore David, which makes Judah’s delay look like political resistance. Others read it more as general talk or a rising consensus, not an official delegation, which makes David’s wording more like leveraging public opinion.
2) What “he bowed the heart of all the men of Judah” implies (v. 14). Some take it mainly as a description of David’s successful strategy—his words and offers changed their attitude. Others think the wording leaves room for God’s providential influence working through those events, without removing David’s active role.
3) How settled Amasa’s appointment is (v. 13). Some read David’s oath as an immediate replacement of Joab in practice. Others see it as a strong promise aimed at winning Judah and Amasa, with the exact implementation unfolding later.
Why the disagreement exists
The passage reports outcomes (“speech … came,” “he bowed the heart,” “they sent … return”) without explaining the mechanics. It also blends political action (messages, elders, escort) with language that can be read as either ordinary persuasion or providential direction, so interpreters differ on how much weight to put on each.
What this passage clearly contributes
Explicitly, it shows David deliberately shaping the conditions of his restoration: he prompts Judah to act, frames the issue as family loyalty, and reconfigures military leadership by offering Amasa Joab’s role. It also shows how restoration after civil conflict is negotiated through recognized social structures, and how unity is publicly expressed (“as one man”) through an invitation and escort across the Jordan (vv. 14–15). These claims fit the wider theme in Samuel that leadership changes often happen through messy human decisions while still moving the story toward the re-established kingship (cf. 2 Samuel 19:11).