An emotional video has emerged from Santa Ana, California of a man reacting to news that his wife is pregnant.

In the clip, which was filmed in February, the man reads out loud a card from his wife as she films.

When he gets to the part about the baby, he bursts into tears of joy.

"I was overwhelmed with great joy and tears because it is something that we both having been praying for," the man later wrote online.

My wife gave me the best news of my life when she told me she is pregnant with my first child. I was overwhelmed with great joy and tears because it is something that we both having been praying for. When she gave me the card to read I thought it was going to be a "Sorry card" because we have recently gotten into a small argument she does things like buying cards to say sorry so I didn't expect that she was going to give me the news that she is pregnant.