We are introduced to the sisters Martha and Mary in Luke 10:38-42.
Jesus entered a certain village (we find out later it was Bethany), and a certain woman named Martha welcomed Him into her house.
Martha had a sister called Mary, who sat at Jesus’ feet and heard His word. But Martha was distracted with much serving.
Martha: Lord, don’t You care that my sister has left me to serve alone? Tell her to help me.
Jesus: Martha, Martha, you are worried and troubled about many things. But one thing is needed, and Mary has chosen that good part, which will not be taken away from her.
We hear of them two other times.
In John 11, their brother Lazarus died, and Jesus raised him from the dead.
In John 12, Jesus was at a supper a day or two before he was crucified (Matthew 26:2). Martha was again serving, and Lazarus was at the table with Jesus. Mary was again at the feet of Jesus. She anointed his feet with an expensive fragrant ointment and wiped them with her hair. Jesus said she did this to prepare his body for burial.