Contradiction with Matthew 6:5
This verse advises against public displays of prayer, whereas Acts 16:25 depicts Paul and Silas praying and singing aloud in prison.
Matthew 6:5: And when thou prayest, thou shalt not be as the hypocrites [are]: for they love to pray standing in the synagogues and in the corners of the streets, that they may be seen of men. Verily I say unto you, They have their reward.
Contradiction with Matthew 6:6
Encourages private prayer, contrasting with the public nature of prayer in Acts 16:25.
Matthew 6:6: But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly.
Contradiction with Ecclesiastes 3:4
Suggests there is a time for mourning, potentially contradicting the joyful singing described in Acts 16:25.
Ecclesiastes 3:4: A time to weep, and a time to laugh; a time to mourn, and a time to dance;