Trinity Sunday

Guest post from St Basil for Trinity (letters 236):

If we have no distinct perception of the separate
characteristics, namely, fatherhood, sonship, and sanctification, but form our
conception of God from the general idea of existence, we cannot possibly give a
sound account of our faith. We must, therefore, confess the faith by adding the
particular to the common. The Godhead is common; the fatherhood particular. We
must therefore combine the two and say, ‘I believe in God the Father.’ The like
course must be pursued in the confession of the Son, ‘I believe in God the Son’
so in the case of the Holy Spirit we must make our utterance conform to the
appellation and say, ‘ in God the Holy Spirit’.