'Acting' in the Bible

Then the responsible men of the children of Israel came to Pharaoh, protesting and saying, Why are you acting in this way to your servants?

And the robes of needlework, the holy robes for Aaron and for his sons, for their use when acting as priests,

The robes of needlework for the work of the holy place, the holy robes for Aaron the priest, and the robes for his sons when acting as priests.

The robes for use in the holy place, and the holy robes for Aaron and his sons when acting as priests.