We have recently published two articles: Dispelling spiritual darkness, which is about prayer altars and A spiritual priesthood about how wrong it is when we, as believers, call ourselves priests. These studies prompted a few the questions: how do we reconcile the building of altars and sacrificing by people who are not of the Levitical line? We may need to challenge our understanding about altars and the premise that only priests were allowed to offer sacrifices. In this study, we will do that. We will first define what the word altar means in the context of scripture. We will also search out the instructions regarding the building of an altar and investigate who built altars and why.