'Act' in the Bible

and Nadab dieth, and Abihu, in the presence of their father, and they had no sons, and Eleazar and Ithamar act as priests.

Consider now, for the Lord has chosen you to build a house for the sanctuary; be courageous and act.”

Then David said to his son Solomon, “Be strong and courageous, and act; do not fear nor be dismayed, for the Lord God, my God, is with you. He will not fail you nor forsake you until all the work for the service of the house of the Lord is finished.