A poetic variant form of atah meaning to come or arrive, used especially in older Hebrew poetry. Its appearances in Deuteronomy and the Psalms are in elevated, archaic poetic style befitting hymns of divine majesty and theophany.
The archaic form of this verb in Deuteronomy 33 places it in the Blessing of Moses — one of the oldest poems in Scripture. The language of God 'coming' in theophanic arrival undergirds the entire biblical narrative of divine visitation: from Sinai to the incarnation to the final return. Each appearance of God is both a foretaste and a guarantee of the ultimate coming — when every knee shall bow and every tongue confess.