Wedding sentiments for joining of families

Hello, I am not Filipino but my brother is marrying a filipino woman and we are attending their wedding in the Philippines. I would like to make a speech at the wedding and end it off with a message in tagolog about being excited for our families joining together after so many years (they have been together 16 years). They have all felt like family to me for more than half my life (I am 29 years old) And i would like to express how happy i am for my sister in law to be a part of our family and for our families to join together. And how much i love and cherish all of them.

I dont know if there is a simple sentence or two that i could say in Tagolog.

Please help me. Are there any traditional sayings that express what i would like to say? And if not what is the simplest way for me to express this. As i will be trying to memorize this phrase. I may have a note with the pronunciation if needed for a longer phrase.

Any help is appreciated 🙏