(John 20:24-25) 24 But Thomas, one of the twelve, who was called The Twin, was not with them when Jesus came. 25 Consequently the other disciples would say to him: “We have seen the Lord!” But he said to them: “Unless I see in his hands the print of the nails and stick my finger into the print of the nails and stick my hand into his side, I will certainly not believe.”Use this scripture ... Thomas saw miracles, saw Lazarus resurrected, but when it came down to Jesus being alive, he had to have proof. He had to stick his finger into the print of the nails, and stick his hand inside Jesus' body's wounds...
Here you have one of the apostles questioning, denying the other apostles. He didn't 'believe'....
And he wasn't DF'd. How many of us have seen miracles?
Then tell them, "Just think of me as Thomas"