Angels are creatures God created, they did not create our universe, only God did. God the Only Begotten Son, the Word of God who became flesh and dwelt among us.
From the Gospel of John Chapter 1:
[1] In the beginning was the Word, and
the Word was with God,
and the Word was God. [2]
The same was in the beginning with God. [3]
All things were made by him: and without him was made nothing that was made. [4]** In him was life, and the life was the light of men**. [5] And the light shineth in darkness,
and the darkness did not comprehend it.
[6] There was a man sent from God, whose name was John. [7] This man came for a witness, to give testimony of the light, that all men might believe through him. [8] He was not the light, but was to give testimony of the light. [9] That was the true light, which enlighteneth every man that cometh into this world. [10]** He was in the world, and the world was made by him, and the world knew him not.**
[11] He came unto his own, and his own received him not. [12] But as many as received him, he gave them power to be made the sons of God, to them that believe in his name. [13] Who are born, not of blood, nor of the will of the flesh, nor of the will of man, but of God. [14]
And the Word was made flesh, and dwelt among us, (and we saw his glory, the glory as it were of the only begotten of the Father,) full of grace and truth. [15] John beareth witness of him, and crieth out, saying: This was he of whom I spoke: He that shall come after me, is preferred before me: because he was before me.
[16] And of his fulness we all have received, and grace for grace. [17] For the law was given by Moses;
grace and truth came by Jesus Christ. [18] No man hath seen God at any time: the only begotten Son who is in the bosom of the Father, he hath declared him.
This clearly indicates two Persons of the Trinity. God the Father, and God the Only Begotten Son (the Word made flesh) Jesus Christ. It also clearly states that the Word was the Creator, and not angels. And Jesus Himself told His disciples that He would send the Holy Spirit in the Book of the Acts of the Apostles:
[1] The former treatise I made, O Theophilus, of all things which Jesus began to do and to teach, [2] Until the day on which, giving commandments by the Holy Ghost to the apostles whom he had chosen, he was taken up. [3] To whom also he shewed himself alive after his passion, by many proofs, for forty days appearing to them, and speaking of the kingdom of God. [4]
And eating together with them, he commanded them, that they should not depart from Jerusalem, but should wait for the promise of the Father, which you have heard (saith he) by my mouth. [5] For John indeed baptized with water, but you shall be baptized with the Holy Ghost, not many days hence.
There it is in a nutshell: the Trinity.
I completely forgot about that one! Gotta love St. Patrick!