Chrisians wish to place a man-made fallible bible as their moral standard and enforce that arbitrary standard on all other human beings.
The bible itself never states that it should be the moral standard for Christians and never states that the whole bible is "God's Word". All such pronouncements are man-made dogmas.
The bible is full of contradictions and errors and is thus a very poor moral standard.
The choice of the bible as a moral standard is arbitrary. Jesus never states that some bible to be complied after his death is a moral standard to be followed for all time. Some of the moral standards within the bible are evil by today's legal standards. For example, slavery is condoned in both Old and New Testamnents.
Moral standards within the bible have also changed over time. In Old Testament times was permissable to have mulitple wives and concubines. The New Testament states that one shoud only have one wife and no concubines.
Punishments for breaking the moral code in the bible have also changed. In the Old Testament many of the punishment for breaking a moral code was death - Leviticus 20:9, Exodus 21:17.
Genocide an mass murder of children is condoned in the bible in Genesis 6:5-9; Deuteronomy 7:1-2; Joshua 6:21; Joshua 10:40-41,
Joshua 8:24 - City of Ai
Joshua 10:26 - Joshua murdered five defenseless kings of the Amorites in cold blood.
Joshua 10:28 - City of Makkedah
Joshua 10:29 - City of Libnah
Joshua 10:31 - City of Lachish
Joshua 10:33 - City of Gezer "...Joshua smote him and his people until he had left him none remaining."
Joshua 10:34 - City of Elgon "They left none remaining."
Joshua 10:37 - City of Hebron
Joshua 10:38 - City of Debir
Numbers 21:2-3 - City of Hormah
Numbers 21:33-35: Land of Bashan "...they smote him, and his sons, and all his people, until there was none left him alive: and they possessed his land."
Deuteronomy 2:21-24: The Ammonite, Horim, and Avim people.
Deuteronomy 2:26-35 - Land of Heshbon "...we took all his cities at that time, and utterly destroyed the men, and the women, and the little ones, of every city, we left none to remain."
Judges 4:16 - City of Sisera
The bible condones the murder of children.
The near ritual murder involving Isaac in Genesis 22:1-18.
Mass murder of the first-born of Egypt in Exodus 7:3; Exodus 7:13-14; Exodus 12:29-30:
Mass murder of 42 little children in 2 Kings 2:23-24.
Executing a whole family for the sins of the father in Joshua 7:20-25.
Mass murder of the Midianite children in Numbers 31:1-18.
Mass murder of Babylonian babies in Psalms 137:8-9.
I would suggest that the bible should be the very last choice as a moral standard as it is so unethical and inmmoral in multiple parts of its texts. The bible condones slavery, polygamy, concubinage, death penalty for trivial crimes, genocide and mass murder of children. Such standards are not objective but entirely subjective and man-made.