Blasphemy of the Holy Spirit occurs when a person actively and willingly pursues a conscious, continuous deliberate malicious attitude of rejecting the Holy Spirit of God, calling God, who is Good, evil.
In the Orthodox faith, the bond of love between those who are present and those who departed exists and is upheld through mutual prayer for one another. Should a man that has prayed for his wife for 50 years stop praying for her after she has departed? Prayers for the departed help them; however, we don’t know how.