If Mohammad was walking the earth over 500 years after Jesus died, then the fact that he practiced polygamy was proof that he ignored the teachings of Jesus Christ, who reinstated the original standard for marriage....one man, one wife.....
Matthew 19:3-6....
"And Pharisees came to him intent on testing him, and they asked: “Is it lawful for a man to divorce his wife on every sort of grounds?” 4 In reply he said: “Have you not read that the one who created them from the beginning made them male and female 5 and said: ‘For this reason a man will leave his father and his mother and will stick to his wife, and the two will be one flesh’? 6 So that they are no longer two, but one flesh. Therefore, what God has yoked together, let no man put apart.”
"Wife" is singular....."one flesh" means the union of two....not several. God has one set of laws, not several different cultural versions of the same law.
Since God’s original standard was for the husband and wife to become one flesh, those taking the lead in the congregations had to be
"husband of one wife". (
1Timothy 3:2, 12; Titus 1:5, 6) This is used to picture the relationship of Jesus Christ and his congregation, his wife or "bride".—
Ephesians 5:21-33.
There was no dispensation to alter that arrangement after Jesus left the earth.
"The first Bible mention of polygamy is a descendant of Cain.....Lamech, of whom it says:
“[He] proceeded to take two wives for himself.” (
Genesis 4:19) Concerning some of the angels, the Bible mentions that before the Flood,
“the sons of the true God . . . went taking wives for themselves, namely, all whom they chose.”—
Genesis 6:2.
Concubinage was practiced under patriarchal law and under the Law covenant. A concubine had a legal status; her position was not a matter of fornication or adultery. Under the Law, if a man’s firstborn son was the son of his concubine, this son would be the one to receive the firstborn’s inheritance.—
Deuteronomy 21:15-17.
Concubinage and polygamy no doubt enabled the Israelites to increase at a much faster rate, and therefore, while God did not establish these arrangements but only allowed and regulated them, they served some purpose at the time. (
Exodus 1:7) Even Jacob, who was tricked into polygamy by his father-in-law, was blessed by having 12 sons and some daughters from his two wives and their handmaidens who became concubines to Jacob.—
Genesis 29:23-29; 46:7-25."
( Excerpts from
Marriage — Watchtower ONLINE LIBRARY )
God's Laws do not have "exemption" clauses for people who want to create their own rules based on their own wants. The Bible's recommendation is clear...choose carefully and with spiritual maturity....because this partnership is for life.
The Bible does give grounds for
separation if there is physical or mental abuse, or failure to provide life's necessities, but there is no freedom for remarriage unless the partner commits adultery. Yet separation is always undertaken with a view to reconciliation. It is God's sanctified arrangement......not something to be entered, or exited, lightly.