What Does Exodus 15:17 Mean?

"You will bring them in and plant them on your own mountain, the place, O LORD, which you have made for your abode, the sanctuary, O LORD, which your hands have established." The song's eschatological climax, the planting on YHWH's own mountain, anticipates the Temple mount in Jerusalem as the destination of the entire Exodus journey.

The "mountain of your inheritance" (har nachalatcha) is identified across the Old Testament canon with Zion/Jerusalem where YHWH caused his name to dwell (Deuteronomy 12:5). The Song of the Sea, sung at the sea crossing before Sinai, before the wilderness, before the land entry, already sees the journey's end: the holy mountain and YHWH's sanctuary.

"Which your hands have established" (Hebrew: konenu yadeichah, your hands prepared/established): the divine construction of the sanctuary is YHWH's own building project. The tabernacle is built by Israel's hands following YHWH's pattern (Exodus 25-31), but the ultimate sanctuary is "established by your hands": the divine builder is YHWH himself. This anticipates the temple theology of Solomon's dedication prayer (1 Kings 8:27-29) and: the Revelation 21 vision of the new Jerusalem that "comes down out of heaven from God": the sanctuary YHWH himself has prepared.

The Song of the Sea thus stretches from the Exodus (verses 1-12) through the wilderness and land-entry (verses 13-16) to the temple/sanctuary establishment (verse 17): a trajectory that carries through the entire Old Testament history from Egypt to Zion. The song sung at the sea already knows the story's end. This prophetic totality of the Song of the Sea (from Egypt to the holy mountain in one song) establishes it as Israel's foundational liturgical narrative, encompassing the whole of YHWH's saving plan in a single poem.