"And Jesus being full of the Holy Spirit returned from Jordan, and was led by the Spirit into the wilderness." (Lk. 4:1)
You see, brethren, what it means to be filled with the Holy Spirit of God. Without the Spirit of God, man is filled with worries: Where will he go and how will he act? But with the Spirit of God, man is without those worries, for then the Spirit instructs man where he will walk and how he will act. Then man become sinless in how movements and actions, because the Holy Spirit, Who leads and guides him, is sinless.
Man can neither walk justly nor act righteously if the Omnipotent and Omniscient Spirit of God does not inform him. Whoever is not led by the Holy Spirit of God is led either by his own individual spirit or by the evil spirit of the demon. As a result of this he becomes helpless, bitter, remorseful, angry and despondent.
We cannot endure the Spirit of God in His fullness as did Christ the Lord, but we can receive the Spirit of God sufficiently in order to know "whither, what and how." According to the purity of man's heart, the Holy Spirit settles in his heart and from his heart directs him.
This is why the Church often repeats this prayer to the Holy Spirit: "O Heavenly King, Comforter, Spirit of Truth … come an abide in us."
O God, O Holy Spirit, to Thee be glory and praise forever. Amen.
The Prologue of Ohrid, Vol. I
2 February, Homily