Shared ground
These verses present a clear turn from request to thanks. The speaker publicly “blesses” Yahweh because Yahweh has heard the speaker’s pleaded requests (an explicit reason statement). The focus is Yahweh’s responsiveness rather than the speaker’s skill or worthiness.
The speaker then describes Yahweh with personal protection language: “my strength” and “my shield.” That is explicit imagery for power to endure and defense against danger, without specifying the exact kind of threat.
The speaker also links inner reliance to outward outcome: “my has trusted in him, and I am helped.” The emotional result is strong joy, and the social result is voiced gratitude: “With my song I will thank him.”
Where interpretation differs
What “heard” means in practice. Some read “he has heard” as meaning a concrete rescue has already happened. Others take it as receiving assurance that the prayer has been received and will be answered, even if circumstances are still unfolding. The text itself gives both signals: it celebrates being heard, and it also says “I am helped.”
How public the “song” is. Some think the “song” implies formal worship in a gathered setting (for example, sanctuary or communal praise). Others read it as any spoken or sung thanksgiving, including personal testimony. The line promises audible gratitude but does not specify the audience.
Why the disagreement exists
The poem uses devotional language that can describe either (1) a completed deliverance or (2) the confidence that comes from being heard. Also, metaphors like “shield” fit more than one kind of crisis (military threat, social opposition, or vulnerability in a legal dispute), so interpreters supply different backgrounds.
What this passage clearly contributes
It shows a biblical pattern where prayer moves into gratitude, and gratitude is grounded in God’s attentiveness (“heard”) and God’s protective power (“strength” and “shield”). It also presents trust as an inner stance (“heart trusted”) that is meant to connect to real help, and it frames joy and song as appropriate responses to experienced help, not as replacements for it. Psalm 28:6 anchors praise in God’s listening, while v.7 links trust, help, joy, and thanksgiving in a tight sequence.