Thomas is often called “Doubting Thomas” by the church. He doubted that Christ had risen from the dead. He said, “Unless I see and touch, I will not believe.” In John 14, Jesus tells them they know the way. Thomas replies, “We do not know the way.” Here again we see that Thomas does not get it. He thinks the return to Judea is a death warrant for them.
Remember that Thomas is a Christian! His “doubts” act as a foil to the plot and help glorify God. Jesus shows Thomas the nail scarred hands. Jesus responds to Thomas, “I am the way, the truth, and the life. No man comes to the Father except through me.” Here in verse 16 John sets up Jesus’ greatest miracle to date; the resurrection of Lazarus from the dead.
J. C. Ryle says, “...show us that the grace of God in conversion does not so remould a man as to leave no trace of his natural bend of character.” The key is not that we are all alike, but that God uses our natural tendency and personality for His glory. The key is that we know Christ as Lord and Savior.
Consider: John 14:1-6