Warumi 15 : 9 Romans chapter 15 verse 9

tena ili Mataifa wamtukuze Mungu kwa ajili ya rehema zake; kama ilivyoandikwa, Kwa hiyo nitakushukuru kati ya Mataifa, Nami nitaliimbia jina lako.
soma Mlango wa 15

and that the Gentiles might glorify God for his mercy. As it is written, "Therefore will I give praise to you among the Gentiles, And sing to your name."