John 3:8

Epistle of Ignatius to the Philadelphians

For though some would have deceived me according to the flesh, yet the Spirit, as being from God, is not deceived. For it knows both whence it comes and whither it goes,[59]

Origen de Principiis Book I

We must understand, therefore, that as the Son, who alone knows the Father, reveals Him to whom He will, so the Holy Spirit, who alone searches the deep things of God, reveals God to whom He will: "For the Spirit bloweth where He listeth."[73]

A Treatise on Re-Baptism by an Anonymous Writer

And the Spirit, indeed, continues to this day invisible to men, as the Lord says, "The Spirit breathes where He will; and thou knowest not whence He cometh, or whither He goeth."[55]