20:26 the doors being shut. Even though Christ’s resurrection body was a physical body (He could be touched, still had the wounds, and could eat with them), it was no longer subject to the physical constraints on our present bodies (e.g., gravitational forces, electromagnetic forces). For example, He could pass through locked doors, and travel swiftly from earth to heaven and back. Our future resurrection bodies will be like His in such characteristics (Philippians 3:20-21; I John 3:2).
20:27 into my side. Jesus allowed Thomas to do much more than “touch” Him, a privilege He had denied Mary Magdalene (John 20:17). However, in the eight-day interim, He had not only led the Old Testament saints up into paradise (see note on John 20:17) but also had presented His shed blood to the Father (Hebrews 9:23-28), received the Father’s promise (Psalm 2:7-9), and presented the firstfruits (Leviticus 23:10; I Corinthians 15:23). However, Thomas did not need to touch Him, for to him, seeing was believing.
20:28 my God. Thomas was an honest skeptic (unlike many today), willing to be convinced by sound evidence. Furthermore, he comprehended the full significance of the evidence, for it proved to him that Jesus was both the God of creation and redemption, and also the rightful Lord of his life.
20:29 have not seen. Nevertheless, Thomas should have been willing to believe (as should we) on the basis of the eye-witness evidence of careful observers, such as John. Peter commends those of later times who trust Christ, “whom having not seen, ye love; in whom, though now ye see Him not, yet believing, ye rejoice with joy unspeakable and full of glory: Receiving the end of your faith, even the salvation of your souls” (I Peter 1:8-9).