(John bears witness of him, and he has cried, saying, This was he of whom I said, He that comes after me is preferred before me, for he was before me;)

And Paul said, John indeed baptised with the baptism of repentance, saying to the people that they should believe on him that was coming after him, that is, on Jesus.

Whose

I indeed baptise you with water to repentance, but he that comes after me is mightier than I, whose sandals I am not fit to bear; he shall baptise you with the Holy Spirit and fire;

And he preached, saying, There comes he that is mightier than I after me, the thong of whose sandals I am not fit to stoop down and unloose.

John answered all, saying, I indeed baptise you with water, but the mightier than I is coming, the thong of whose sandals I am not fit to unloose; he shall baptise you with the Holy Spirit and fire;

General references

And he preached, saying, There comes he that is mightier than I after me, the thong of whose sandals I am not fit to stoop down and unloose.

He it is of whom I said, A man comes after me who takes a place before me, because he was before me;