“Then Jesus told him (Thomas), ‘Because you have seen Me, you have believed; blessed are those who have not seen and yet have believed’” John 20:29
Following His resurrection, while appearing to Thomas, Jesus spoke of a future group who were to one day believe in Him. We who are included in that group do not have to see Jesus with our physical eyes to believe.
Peter says this, Though you have not seen him, you love him. Though you do not now see him, you believe in him and rejoice with joy that is inexpressible and filled with glory, 1 Peter 1:8
That is the wondrous blessing of faith. Seeing may not be believing, but believing is seeing.
But we do see Him who was made for a little while lower than the angels, namely, Jesus, because of the suffering of death crowned with glory and honor. Hebrews 2:9a