We can look at both readings together. From Moses listening intently to God, his face seemed to be taking on a God-like glory, but actually it was his soul that began to glow with Godliness.
The same was true of Martha. Jesus had recognized her ready hospitality to the rich and poor as a Godly trait. Added to that kindness, Martha had joyfully accepted God’s gift of faith. It had brought her to see Jesus as her Lord.
When we act generously with God’s poor, and when we spend time face to face with the Lord, our souls, like those of Moses and Martha, will glow with a Godly light.