We serve a God that knows everything from the beginning, He knows hiw man operates, He knows where man will fall apart (weaknessess) and He is the one who oestratced marriage from the beginning.
It is not the will of God for a man or woman to die rather, He(God) encourage a man or woman to remarry incase there is death of any. In Matthew 22 vs23-30, Jesus made it clear that in heaven there is nothing like marriage or remarriage rather we will turn to be angels of God or children of God. Marriage or remarriage only ends here on earth to avoid sin of fornication or adultery .
No issues of a man fighting his remarried wife or a woman fighting his remarried husband at the resurrection , we all be equal to angels of God or children of God which we see on the bible luke 20 vs 34-36.
In conclusion,God approves remarriage for the fulfillment of our purpose here on earth and to His Glory.
Thanks for reading and God bless you all.