John Gill Commentary Psalms 44:16

"For the voice of him that reproacheth and blasphemeth, By reason of the enemy and the avenger." — Psalms 44:16 (ASV)

For the voice, of him that reproacheth and blasphemeth
That is, antichrist, to whom a mouth speaking blasphemies has been given, and which he has opened in blasphemy against God, attributing that to himself which belongs to God; blaspheming his name, his tabernacle, and them that well in heaven; see (Revelation 13:5Revelation 13:6) (2 Thessalonians 2:4) ; by reason of the enemy and avenger ;
which are very proper characters of antichrist, who is the enemy of Christ and of his people, and breathes out vengeance against them; as the same titles are also given to the Scribes and Pharisees, the implacable enemies of Christ, (Psalms 8:2) .