Luke 1:34-38

"How will this be," Mary asked the angel, "since I am a virgin?" The angel answered, "The Holy Spirit will come upon you, and the power of the Most High will overshadow you. So the holy one to be born will be called the Son of God. Even Elizabeth your relative is going to have a child in her old age, and she who was said to be barren is in her sixth month. For nothing is impossible with God." "I am the Lord's servant," Mary answered. "May it be to me as you have said." Then the angel left her.

"The Holy Spirit will come upon you"
Matthew 1:18 This is how the birth of Jesus Christ came about: His mother Mary was pledged to be married to Joseph, but before they came together, she was found to be with child through the Holy Spirit.

and the power of the Most High
Luke 1:32 "He will be great and will be called the Son of the Most High. The Lord God will give him the throne of his father David, ..."
Luke 1:76 "And you, my child, (John) will be called a prophet of the Most High; for you will go on before the Lord to prepare the way for him, ..."
Mark 5:7 He shouted at the top of his voice, "What do you want with me, Jesus, Son of the Most High God? Swear to God that you won't torture me!"

So the holy one to be born
Mark 1:24 "What do you want with us, Jesus of Nazareth? Have you come to destroy us? I know who you are--the Holy one of God!"

will be called the Son of God
Matthew 4:3 The tempter came to him and said, "If you are the Son of God, tell these stones to become bread."

Even Elizabeth your relative is going to have a child
Luke 1:24 After this his wife Elizabeth became pregnant and for five months remained in seclusion.

For nothing is impossible with God
Matthew 19:26 Jesus looked at them and said, "With man this is impossible, but with God all things are possible."

NOTES:
Holy One: 2 Corinthians 5:2; Hebrews 4:15; 7:26; 1 Peter 2:22; 1 John 3:5

(parentheses are mine)

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984 by International Bible Society. Used by permission. All rights reserved worldwide.