One victim, 33, suffered a neck wound and two other members of the congregation at the New Jerusalem Apostolic Church in Aston were hurt while restraining the attacker.
Delahaye has also been charged with two counts of wounding and possession of a bladed weapon, and will appear at Birmingham Magistrates' Court during the week.
Karl George - Victim
The church has named the victims as Karl George, Adam Brooks and Jorge George.
Minister Kevin Hutchinson said about 150 people were taking part in the New Jerusalem Apostolic Church's Sunday service shortly before 11am when ‘'a man with a knife stormed into our sanctuary'’. ‘'He drew out a large kitchen knife and was restrained by a number of members, about three. Three members were injured and were taken to hospital.
'The men in the church were able to restrain him until the police and paramedics came.'
Officers at the scene arrested a 47-year-old man on suspicion of attempted murder.
The man with the neck wound is now in a stable condition in hospital. His injuries are not thought to be life threatening.
A West Midlands Police spokesman said: 'Two people who helped restrain the offender were taken to hospital with minor hand injuries.
'Early indications suggest that the offender and victim knew each other and that this was a targeted attack.
'This is not believed to be a terrorism related incident.