I could do without the instrumentals, but the singing is great! It’s a really good arrangement/melody.
It’s probably this one: “Hilarem Datorem” by the Rev. Fr. Tony Okwy Umeh. If you scroll down, it’s a sol-fa sheet. So it probably didn’t originally have the instrumentals?
Using it as an offertory song is kinda on the nose… but I bet it works….
(“Hilarem [enim] datorem Deus diligit” — “[For] God loves a cheerful giver.”]
The nice thing is that the verses are also Bible quotes.
“Silver and gold have I none, but what I have I will give to you.”
“Truly, truly I say to you, this poor widow has thrown in more than all the others.
“For they have thrown into the offerings for God out of their abundance,
“But she out of her want has thrown in all she had to live on.”
“Truly I say to you” – “It is more blessed to give than to receive.”
(Acts 3:6; Luke 21:3-4, Acts 20:35)