Wrestling
Jacob is left alone one night, and a man wrestles with him until daybreak. In Genesis 32 the stranger cannot overcome him, so he touches the hollow of Jacob’s thigh and puts it out of joint. Jacob limps away, and he asks for a blessing before he will let go. Earlier, Rachel uses the same word of her contest with her sister over children, and names a son Naphtali. Paul gives it another turn in Ephesians 6:12: “For we wrestle not against flesh and blood.” For him the struggle is spiritual. Genesis 32:22-32 is the passage to start with.
4 verses
Genesis
And Rachel said, With great wrestlings have I wrestled with my sister, and I have prevailed: and she called his name Naphtali.
And Jacob was left alone; and there wrestled a man with him until the breaking of the day.
And when he saw that he prevailed not against him, he touched the hollow of his thigh; and the hollow of Jacob's thigh was out of joint, as he wrestled with him.
Ephesians
For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.