1) Good afternoon. Welcome to Chorley URC. - Dzień dobry. Witam w Chorley URC.
2) Who gives this woman to be married to this man? - Kto oddaje temu mężczyźnie tę kobietę?
3) The blessing of God Almighty, Father, Son and Holy Spirit will be with us all. - Niech was błogosławi Bóg wszechmogący, Ojciec i Syn, i Duch Święty.
If you want to hear the pronunciation, go to this website: ivona.com/en/ . Copy and paste Polish phrases, pick one of the available Polish voices (Jan sounds quite natural) and click 'play'.
He would prefer to have this written in English
I'm sorry but I can not provide that, my English isn't good enough, maybe some native English speaker would be able to help. I think listening to the pronunciation might actually help OP to judge by himself whether he's up to the task. Learning the last two phrases can be challenging.