The ex-children's television host announced last month that his spouse Gemma passed away just three days after falling ill with acute myeloid leukaemia.
— Simon Thomas (@SimonThomasSky) December 3, 2017
The 44-year-old Christian said in his first tweet since he shared a picture of his wife and their eight-year-old son Ethan, that he was yet to read all the messages he had been sent his wife died.
"I have only been able to read a fraction of the incredible outpouring of love and support for us on here in the painful days that followed," he said.
"One day, with my boy, we will read them. For now, all I can say from the depths of my heart, is thank you."
Today I am crushed with indescribable pain. Just three days after falling ill with Acute Myloid Leukaemia, my dear wife Gemma passed away yesterday evening surrounded by her family and friends. If you are a prayer - pray for my boy Ethan. 8yrs, precious and in bits. Thank you.
— Simon Thomas (@SimonThomasSky) November 25, 2017
The Premier League presenter had previously asked people to pray for his son who he described as "in bits".
Around 3,100 people in the UK are diagnosed every year with acute myeloid leukaemia, a blood cancer which can affect both children and adults.