No, Bible teaching forbids you to do this. You must be content with the wife you have. It is much worse to be a eunuch than to have a barren wife, and yet God
“Let not any eunuch complain, I am only a dry tree’. For this is what the LORD says: To the eunuchs who ... hold fast to my covenant – to them I will give within my temple and its walls a memorial and a name better than sons and. daughters: I will give them an everlasting name that will not be cut off.” (Isaiah 56:3-5)
In other words, the place in God’s kingdom that He offers you is worth more than all the children in the world. But if you still want children in this life you should adopt a child that has lost its parents, and bring up that child as if he or she were your own. Also remember that barrenness is sometimes the problem of the husband, not of the wife (see 3 above).
5. I am the only son of my father, and he insists I should put away my barren wife and take another, because he wants to see his line carried on through me. Should I obey my father?
No, not in this case. The Bible commands, “Honour your rather and your mother”, and this means that generally we should obey our fathers. But when a father commands us to do something forbidden by the Bible, then we must disobey that father, and instead obey our Heavenly Father. Jesus said:
“Anyone who loves his father or mother more than me is not worthy of me.” (Matthew 10:37)
6. My wife has just given birth and according to the custom of my child I must not have sex with her again until the child is two years old. Should I obey this custom?
No. It is a bad custom, based upon a pagan superstition. It puts men under a great strain, and causes many men to fall into sin. Because of temptations that arise when married couples abstain from sex for a long time, the Bible forbids them to do so:
“Do not deprive each other except by mutual consent and for a time, so that you may devote yourselves to prayer. Then come together again so that Satan will not tempt you because of your lack of self- control.” (1 Corinthians 7:5)
For medical reasons couple should not have sex from a number of weeks before the expected birth of a child until a number of weeks after the birth. Otherwise the wife can catch an infection that may endanger her life, but when the child is six weeks old it is quite safe and right for the couple to resume a normal sex life. The belief that this will affect the milk is quite wrong.
It would probably benefit both the health of the mother and the child it another baby is not born within two years of the first. This should be a matter or birth control though not a matter of abstaining from sex altogether.
7. My wife has died. Is it right for me to marry a second wife?
Yes. Polygamy is wrong, but it is not polygamy for a man to marry a man when his first wife is dead. God says that you may marry again if you wish. A woman also is free to marry again if her husband dies. But remember that the Bible commands you to choose a sister in Christ for your new wife (1 Corinthians 7:39).