Reference for Exodus 36:20

וַיַּ֥עַשׂ אֶת־הַקְּרָשִׁ֖ים לַמִּשְׁכָּ֑ן עֲצֵ֥י שִׁטִּ֖ים עֹמְדִֽים׃

And he made the boards for the tabernacle of acacia-wood, standing up.

BDB