"By myself" = God. And God is Father/Son/Holy Spirit in three persons.
it was the angel speaking for God from heaven, and this is not the only time this has happen, OT as well as the NT.
see, when people assume thing, this is where, and how falsehoods get started.
the scripture at our Lord's Baptism says this,
Matthew 3:16 "And Jesus, when he was baptized, went up straightway out of the water: and, lo, the heavens were opened unto him, and he saw the Spirit of God descending like a dove, and lighting upon him:
Matthew 3:17 "And lo
a voice from heaven, saying, This is my beloved Son, in whom I am well pleased.
(the scriptures never said it was the voice of the LORD, God).
Mark 1:10 "And straightway coming up out of the water, he saw the heavens opened, and the Spirit like a dove descending upon him:
Mark 1:11 "And there came
a voice from heaven, saying, Thou art my beloved Son, in whom I am well pleased.
(again, the scriptures never said it was the voice of the LORD, God).
Luke 3:22 "And the Holy Ghost descended in a bodily shape like a dove upon him, and
a voice came from heaven, which said, Thou art my beloved Son; in thee I am well pleased.
A "VOICE", when assumption are given by men,
Proverbs 14:12 "There is a way which
seemeth right unto a man, but the end thereof are the
ways of death.
never assume nothing, KNOW.
John 5:37 "And the Father himself, which hath sent me, hath borne witness of me.
Ye have neither heard his voice at any time, nor seen his shape.
And God is Father/Son/Holy Spirit in three persons.
If that's true, then take the REVELATION 1:4 & 5 Test ...... (smile).