His ways are above our ways, which can look like moral relativism to someone who is not willing to know Him.
So, what do you think His position is on for example slavery and the stoning of disobedient children? The God of the bible clearly endorsed these practices in the past. Does he still endorse them?
Either you believe the Bible is the literal word of God or not. Do you? If so, you believe that God thinks it fine to own and beat slaves. If not, then you're admitting the Bible is a book written by man.