A/N: Thanks again for all the reviews! If anyone didn't know, I was the first one of Lost-Form to come up with the Jack/Claire sibling theory back in December of 2004. And I got freaked out when it started to get into the show. I hope I'm still right! LOL

Chapter 16: What Child is This

Before anyone knew it, Christmas was here. The Shepherd family was getting ready for midnight service Christmas Eve. Jack was excited. It was his and Kate's first Christmas together as a couple. As a tradition, her and Sam would go with the Shepherds to church, then have Christmas morning together. It helped since Kate couldn't be with her mom.

Meanwhile, Claire was nervous. She started to feel bad going to church, but Pastor Eko had really helped her. He told her that God would forgive her if she repented, and that no matter what, God would love her and her baby. She did ask for forgiveness and felt a lot better, reminding herself of what Eko said. Charlie was a big help too. He was becoming a great friend to her. Claire had finally been able to tell the rest of her friends and the staff at the high school found out. By the time she got back after New Years, everyone would know.

"Ready sis?" Jack asked through the doorway.

"Yeah." Claire replied. She was in one of her church dresses. "You look nice."

Jack straightened his tie with his suit. "Thanks. But these things drive me crazy!"

"You'll have to get used to that when you're a doctor." She reminded him.

"Don't remind me. I'll have to wear one almost everyday, when I'm not in surgery."

"Kids! We don't want to be late!" Margo announced.

The two siblings went downstairs to leave.

"Mind if I join you?" Charlie asked Claire when he spotted her.

"Hey! Sit down." Claire replied. "Scoot over Jack."

Jack and Kate moved over giving Charlie room. The girls were in between the guys on the pew. "Hey Charlie!" Jack and Kate both said.

"I haven't been to church in awhile, but I figured I better start again." Charlie stated. "Oh! That reminds me Claire. There's Liam, his wife Karen, and my niece Megan." Charlie pointed to the 3 across the church.

"She's so cute!" Claire smiled.

"Soon I'll have a niece or nephew myself." Jack said proudly.

"You'll love it mate. They are so much fun, and you give them back to their parents when you're done with them." This made the boys laugh and Claire and Kate gave them looks.

"Sorry." The both said stopping.

"Welcome everyone!" Pastor Eko started. "Tonight we are celebrating our Lord's birth. It's a remarkable story about Jesus and the way God brought His son to us. He came a little baby. Jesus could have come anyway, but God wanted His son to grow up like all of us. That brings us to Mary. God chose her to be the mother of His son. And she was only a teenager."

This thought never occurred to Claire. Mary, Jesus' mother, was her age, if not younger. Maybe I don't have it bad off like I first thought. You gave Mary Your son. That had to have been a lot of responsibility. Way more that I have with my baby.

"Most girls would ask why or not want to go through with this." Eko continued. "But Mary accepted this responsibility and became Jesus' mother. Let us pray. 'Lord, today we celebrate Your birth. Let us remember Mary and all that she went through and let us remember all that You have done for us. Let us make this Christmas special and safe. In Your name. Amen.'"

Everyone after the service got up and talked to the other members. "Well, hello Jack and Claire!" An older woman spoke to the siblings.

"Rose!" Jack and Claire both said as they hugged her. She was like a second mom to them. "Where's Bernard?" Jack asked.

"He's up there talking to Pastor Eko. I haven't seen the two of you in awhile. How are you doing with school Jack?"

"Good. I'm just waiting for my college acceptance letter." Jack replied.

"So, are you finally dating Kate?" Rose smiled.

"Maybe. She's right here." Jack got Kate, who was talking to her dad.

"Rose!" She hugged her.

"Kathrine! You look so beautiful! I'll be expecting a wedding invitation soon!"

Jack and Kate were going to ask why, but they held off. She was talking to Claire.

"How's the baby?" Rose asked the young girl.

"How did you know?"

"I can just tell honey!" She hugged Claire again. "I'm so happy for you."

"Thanks Rose. I want you to meet my friend Charlie Pace." Claire introduced them.

"Well, hello Charlie." She hugged him. "I hope to see you here more."

"Definitely." Charlie smiled at her.

"Claire, Jack. We better get going." Christian reminded them. "Some of us need sleep."

They said their goodbyes and the Shepherds and Austens left.

Christmas had been fun. Many presents were exchanged and the girls made a great dinner. Before long, Sam and Kate had to leave. They were going to visit Sam's family who still lived in LA. It was now nighttime and Jack went out to the pool. He didn't want to get in, so he took off his socks and ducked his feet. He sat watching the water move with his feet.

"Hey big brother!" Claire said. She was now next to him. "Miss Kate?"

Jack smiled at how his sister knew him. "Yeah."

Claire sat down next to him by the pool and took off her shoes and dunked her feet just like Jack. "I've got something that will cheer you up!" She smiled at him.

"What?" He looked at her confused.

"Your nephew!" Claire excitedly announced.

A wide grin came across Jack's face. "It's a boy!"

Claire beamed and nodded. "But he wants to say hi!" She picked up Jack's hand and placed it on her now noticeable tummy.

That's when he felt it. "He just kicked!" A bigger smile came to his face.

"He's been doing this all day."

"When did you find out he's a he?"

"3 days ago and it was so hard keeping it a secret."

"I can't wait to teach you football! You're going to be a good runner." Jack said speaking to the baby.

"Great! Another sports fanatic." She teased.

"Mind if I join you two?" Christian asked.

"Sure!" Claire replied happily and made room between her and Jack.

Christian did the same thing as his children and soaked his feet. "I see that you were talking to the baby Jack. I had a nice conversation with my grandson earlier. But that's not why I came out her. I wanted to give you two something."

"Why not earlier?" Claire asked.

"I just wanted it to be the 3, well now 4 of us." Christian replied. "Jack, I planned to give this to you later, but I think you might need it sooner." He smiled as he gave Jack a small black box.

Jack opened it and saw a diamond ring with emeralds around it. "Dad? Wasn't this mom's?"

He nodded. "It was also my mother's. My father gave it to her as an engagement ring. She gave it to me to give to your mom. Now, I'm giving it to you to give your future wife." Although he wanted to say Kate, he didn't. But he had a feeling that girl would be the one wearing it. "Then you will pass it on to your son."

"Thanks dad!" Father and son hugged.

"Your welcome son." He then turned to Claire. "Now I have something for you sweetie." He handed her a larger black box.

Claire opened it and saw an angel holding her pink October birthstone.

"I got this made when you were born. I was going to wait for your wedding, but I think you need it now."

"Thanks daddy!" She hugged him.

"Turn it over."

Claire turned the necklace and saw an inscription.

For my angel Claire.

Daddy.

"It's so beautiful." Tears came and he hugged her. He placed it on his daughter's neck.

"That's where it belongs." Christian smiled. He then put one arm around his son and daughter. "I don't get to tell you both this enough, but I love you. I'm grateful to have you as my children."

"I love you daddy." Claire replied.

"I love you too dad." Jack replied.

The 3 sat their watching the sun sink in the Pacific, ending a great day.