Hillsong senior pastor Brian Houston was so thrilled when his granddaughter Willow got to spend some time with "Hands to Myself" songstress Selena Gomez during her birthday celebration that he posted a captioned image of the event on his social media accounts.

On his Facebook page, Houston shared a photo of Gomez hugging his granddaughter. "My beautiful grand daughter turned 6 this week and to make her birthday very special, Selena Gomez was in Australia to say hi. So cool," he wrote..

Gomez was in Sydney last Tuesday for the Australia leg of her worldwide Revival tour.

However, instead of feeling impressed by the image posted by Houston, some people apparently did not like it, voicing particular disapproval of Gomez. One even called Houston a "false prophet."

There was also a debate on the comments section about Gomez's purported Christianity. Some people said she should use her popularity and talent to promote worship songs instead of secular music.

However, a fan named Gabby wrote, "God bless Selena Gomez, and we hope you give your heart to Jesus and [lend your] singing to Hillsong." 

When Hillsong Church opened its doors to Gomez and many other celebrities such as Justin Bieber over two years ago, Houston spoke up in behalf of them when judgmental churchgoers voiced their grievances.

"She is just one of many, many sinners we welcome every Sunday. Even slanderers like you!" Houston wrote on his Twitter account (@BrianCHouston).

Gomez made Hillsong proud after she joined the Christian group. She even made a surprise appearance during Hillsong Church's Young & Free Revival Concert in Los Angeles several months back where she sang an original worship song for the first time.

Gomez sang "Nobody," telling worshippers: "Tonight is more than a concert, it's more than Hillsong, it's more than me coming on stage and singing a song for you. It's about a relationship that is greater than anything, guaranteed."