Carl Beckwith, a Lutheran theologian, explains a little bit about how God revealed His triune nature in the Old Testament scriptures:

What are we to make of Scripture variously identifying the sole creator of the heavens and the earth as YHWH, Elohim, Word, Spirit, Wisdom, and Father? The answer must be that the scriptural understanding of monotheism encompasses both Is 44: 24 (“ Thus says YHWH, your Redeemer, who formed you from the womb: I am YHWH, who made all things, who alone stretched out the heavens, who spread out the earth by myself”) and Gn 1: 1, Dt 32: 6, and Ps 33: 6.

Scripture declares that YHWH by Himself made all things, stretched out the heavens, and made us from the womb. According to Scripture, however, the same may be said of the Father, the Word/ Wisdom, and the Spirit. Further, Scripture insists that we have one creation, not three, and that these three created, not that they contributed a part here and a part there. Their work of creation is one.

The only responsible conclusion according to the Scriptures is to confess the correlative and coequal working of Father, Word/ Wisdom, and Spirit, and to locate all three— equally and eternally— within the unique identity of YHWH, our Elohim.

Carl L. Beckwith, The Holy Trinity, in Confessional Lutheran Dogmatics, vol. 3 (Fort Wayne, IN: Luther Academy, 2016; Kindle ed.), KL 4538-4547.