How to say congratulations on your brother-in-law's marriage?

1. "I wish you a hundred years of harmony, unity and happiness forever!"

2. "May your love bloom like flowers and your happiness be as warm as sunshine! I wish everyone happiness! "

3. "I sincerely wish you a happy wedding, love each other, respect each other and create a better future!"

4. "May your marriage be sweet and happy, and the road to happiness will go on!"

5. "May your love never fade, and have a long happy time! May you grow old together! "

I hope the above blessings can help you express your wishes for your brother-in-law's marriage. I wish them a happy wedding and happiness!