**(Remember that Matthew was a Jewish monotheist, writing for fellow-Jewish monotheists, and so this formula is quite striking, speaking of the Father, the Son, and the Holy Spirit on equal terms.**
You are reading your ‘separate and distinct, co-equal’ trinitarian opinion into what Matthew wrote.
Further, Jesus Christ said, “...my Father is greater than I”. (John 14:28)
If I say “ my father is greater than I” , I hope you would agree with me that I am talking about two distinct persons in that statement:
1. My father
2. Myself
When Jesus said that statement in John 14:28, how many persons was He talking about?