Wisdom, also known as the Spirit, Holy Ghost, or Holy Spirit. This is one of my favorite passages in the Bible.
For Wisdom is mobile beyond all motion,
and she penetrates and pervades all things
by reason of her purity.
For she is an aura of the might of God
and a pure effusion of the glory of the
Almighty;
therefore nought that is sullied enters
into her.
For she is the refulgence of eternal light,
the spotless mirror of the power of God,
the image of his goodness.
And she, who is one, can do all things,
and renews everything while herself
perduring;
And passing into holy souls from age to age,
she produces friends of God and prophets.