why do some people think they can ignore a law to suit themselves, the main one it is done with is divorce, our Lord said those who divorce and remarry commit divorce, but that is exactly what some church goers do, if u do divorce then stay single and devote yourself to the Lord.
What you are stating is not what Jesus said. He answered and said to them, “Have you not read that He who made them at the beginning ‘made them male and female,’ and said, “For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh’? So then, they are no longer two but one flesh. Therefore, what God has joined together, let not man separate.” They said to Him, “Why then did Moses command to give a certificate of divorce, and to put her away?” He said to them, “Moses, because of the hardness of your hearts, permitted you to divorce your wives, but from the beginning it was not so. And I say to you, whoever divorces his wife, except for sexual immorality, and marries another, commits adultery; and whoever marries her who is divorced commits adultery.” His disciples said to Him, “If such is the case of the man with his wife, it is better not to marry.” Matthew 19:4-10
Sexual immorality (fornication) and death (Rom. 7:2-4) provide the only severance to the marriage bond.
Consider Deuteronomy 24:1-4 “When a man takes a wife and marries her, and it happens that she finds no favor in his eyes because he has found some uncleanness in her, and he writes her a certificate of divorce, puts it in her hand, and sends her out of his house, when she has departed from his house, and goes and becomes another man's wife, if the latter husband detests her and writes her a certificate of divorce, puts it in her hand, and sends her out of his house, or if the latter husband dies who took her as his wife, then her former husband who divorced her must not take her back to be his wife after she has been defiled; for that is an abomination before the Lord, and you shall not bring sin on the land which the Lord your God is giving you as an inheritance.
Although we are not under law but grace, we can learn from Deut. 24:1-4 that when the divorce wife has remarried, she likely would have form a bond with her new husband, thus the former husband was never to remarry her. This again shows us that fornication severs the bond.
And in the New Testament Joseph was considered a righteous man yet he was about to divorce his wife Mary when learning that she was with child, until told not to do so by an angel in a dream. (Matt 1:19)
Therefore, divorce due to sexual immorality (fornication) was permitted by God, and was not considered a sin. In fact, God considered giving Israel a certificate of divorce because of her adulterous behaviour, but instead he took her back (Jer. 3:1-8)
So, there are circumstances where divorce individuals can marry again. Other things to consider, would be the relationship that the individuals had with God when they were married. Did God bring join them together or did they join themselves being lead by the flesh and not the Spirit? And should married believers be placing a yoke on new believers who are divorced that they themselves are not willing to wear?
Most importantly, one should consider that the message of Jesus Christ is one of reconciliation and grace.