The happy couple first shared the exciting news with People, who added Jessa is due in February.
"We are overjoyed to announce that [their nine-month-old son] Spurgeon has a new title in life as 'big brother!' We are so thankful that God is adding to our family,” they said in a statement.
Ben and Jessa tied the knot in November 2014 and welcomed their first son, Spurgeon, the following year.
They also told the outlet that "2017 is shaping up to be a wonderful year already, and we know Spurgeon will do a great job in his new role. Having Spurgeon has been such a wonderful blessing, and we cannot wait to see the face of this sweet new baby (or babies)!"
We can’t wait to meet their new addition — or additions!