Question: what is the biblical definition of to worship?
Answer: The use of the word worship in the Hebrew is the verb “shachah” which means “to bow down, to prostrate oneself” or to “lay flat on the ground” and that's just what we see in the Old Testament as they lay prostrate before the Lord when He appears as “the angel of the Lord” (Ex 3:2) or in a vision as with Isaiah (6:5).