When Jesus was baptized the Holy Spirit came upon Him as a dove, The Father spoke and said "this my beloved Son in whom I am well pleased. Sounds like the Trinity to me.

Peter said, "how Jesus anointed with Holy Spirit and power, went about doing good and healing all those oppressed of the Devil for God was with Him. " That;s the Trinity.

In Acts at Antioch "The Spirit said "separate Paul and Barnabus for the work I have called them to."

Paul said "The Spirit speaketh expressly that in the last days...."