זוהר שמות — דף רכד ע”ב

Betzalel and Oholiab were as one, right and left, with Moses above and Betzalel below him. The young boys who encountered Elisha were empty of Torah and had left the secret of faith. 'He turned and saw them': he perceived that no worthy offspring would come from them, and two bears emerged, tearing forty-two children in parallel to Balak's offerings. The gold of the terumah is an elevation upward, and it is this accounting of the Tabernacle that was established.