The interviewing process had centred mainly on his previous convictions, so Wilkinson said he was "blindsided" when he heard the nomination board had unanimously decided to take him on for the role.
Ten years ago Wilkinson was sentenced to 175 hours of community service following guilty pleas to a charge of theft, two of fraud and one of burglary.
The offences occurred when Wilkinson was a pastor at Tauranga's Otumoetai Baptist Church.
Two involved false insurance claims on personal property, one the theft of an office laptop computer - which he later sold back to the church for $3456 less than the insurance company had paid out - and the fourth charge concerned a break-in at a parishioner's home.
Wilkinson said while he would never want to repeat his history, it still offered him "something that I wouldn't have now if I hadn't been through it".
"It offers a strange gift if it's handled well and I suppose that's the redemptive side of the story really."
Wellington parishes were positive about Wilkinson's appointment.
Reverend David Newton from St Michael's and All Angels church said Wilkinson would bring a "breath of fresh air" to the diocese.