Matthew 15:22-28
Just then a Canaanite woman came out of that area [Note: Mark 7:26 calls her a Syrophoenician Gentile], crying, "O Lord, son of David, have pity on me. My daughter is seriously troubled by an evil spirit."
Matthew 26:41
Be alert and pray, so that you do not give in to temptation; the spirit [of a person] is truly willing [i.e., to do a certain thing], but his physical nature is [often too] weak [to carry it out]."
Matthew 26:44
He left and went away from them again and prayed a third time, saying the same words again.
Luke 11:5-8
And Jesus said to His disciples, "Suppose one of you who has a friend would go to him at midnight and say to him, ' [Please] lend me three loaves of bread,
2 Corinthians 12:7-9
But, so that I would not become too conceited over the tremendous revelations [I received], a "thorn in the flesh" was given to me as a messenger from Satan to torment me. [Note: This "thorn" was probably some physical handicap, possibly defective eyesight. See Gal. 4:14-15; 6:11].