Matthew 9:20-22
20 And suddenly, a woman who had a flow of blood for twelve years came from behind and touched the hem of His garment. 21 For she said to herself, “If only I may touch His garment, I shall be made well.” 22 But Jesus turned around, and when He saw her He said, “Be of good cheer, daughter; your faith has made you well.” And the woman was made well from that hour.

Mark 2:4
4 And when they could not come near Him because of the crowd, they uncovered the roof where He was. So when they had broken through, they let down the bed on which the paralytic was lying.

1 Samuel 1:10-12
10 And she was in bitterness of soul, and prayed to the Lord and [a]wept in anguish. 11 Then she made a vow and said, “O Lord of hosts, if You will indeed look on the affliction of Your maidservant and remember me, and not forget Your maidservant, but will give Your maidservant a male child, then I will give him to the Lord all the days of his life, and no razor shall come upon his head.” 12 And it happened, as she continued praying before the Lord, that Eli watched her mouth.

Isaiah 66:9
9 Shall I bring to the time of birth, and not cause delivery?” says the Lord.
“Shall I who cause delivery shut up the womb?” says your God.

Prayer and praise

Genesis 25:21-23
21 Now Isaac pleaded with the Lord for his wife, because she was barren; and the Lord granted his plea, and Rebekah his wife conceived.

Isaiah 54:1
54 “Sing, O barren, You who have not borne! Break forth into singing, and cry aloud, You who have not labored with child! For more are the children of the desolate Than the children of the married woman,” says the Lord.

2 Chronicles 20:21
21 And when he had consulted with the people, he appointed those who should sing to the Lord, and who should praise the beauty of holiness, as they went out before the army and were saying: “Praise the Lord, For His mercy endures forever.”

Luke 2:37
37 and this woman was a widow [a]of about eighty-four years, who did not depart from the temple, but served God with fastings and prayers night and day.

Faith in his word

Matthew 7:24-27
24 “Therefore whoever hears these sayings of Mine, and does them, I will liken him to a wise man who built his house on the rock: 25 and the rain descended, the floods came, and the winds blew and beat on that house; and it did not fall, for it was founded on the rock.26 “But everyone who hears these sayings of Mine, and does not do them, will be like a foolish man who built his house on the sand: 27 and the rain descended, the floods came, and the winds blew and beat on that house; and it fell. And great was its fall.”

Persevere

Luke 18:1-8
18 Then He spoke a parable to them, that men always ought to pray and not lose heart, 2 saying: “There was in a certain city a judge who did not fear God nor [a]regard man. 3 Now there was a widow in that city; and she came to him, saying, [b]‘Get justice for me from my adversary.’ 4 And he would not for a while; but afterward he said within himself, ‘Though I do not fear God nor regard man, 5 yet because this widow troubles me I will [c]avenge her, lest by her continual coming she weary me.’ ”6 Then the Lord said, “Hear what the unjust judge said. 7 And shall God not avenge His own elect who cry out day and night to Him, though He bears long with them? 8 I tell you that He will avenge them speedily. Nevertheless, when the Son of Man comes, will He really find faith on the earth?”

Luke 11:5-13
5 And He said to them, “Which of you shall have a friend, and go to him at midnight and say to him, ‘Friend, lend me three loaves; 6 for a friend of mine has come to me on his journey, and I have nothing to set before him’; 7 and he will answer from within and say, ‘Do not trouble me; the door is now shut, and my children are with me in bed; I cannot rise and give to you’? 8 I say to you, though he will not rise and give to him because he is his friend, yet because of his persistence he will rise and give him as many as he needs.