This will make more sense if you read the earlier parts. Don't worry, they're fun, action packed, and build the tension. Read them first! Also, all characters in sexual situations are 18 years or older. Enjoy.
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As Pricilla approached her brother's quarters, a ghostly figure moved down the dim corridor toward her. The feminine shadow moved from the direction of the suite her mother shared with her father. The ghost solidified as they both reached Jacob's doors, and Pricilla's pupils dilated to see her mother better. Mary looked the same as always. Except, maybe, her Colony Control uniform didn't fit as well as it used to. It seemed to have shrunk on the woman. Pricilla had been having the same problem with her uniforms. Pricilla just caught a glint of Mary's platinum cross hanging outside her uniform over that growing bosom. "What are you doing here, Mom? It's the middle of the night." Pricilla folded her arms over her chest, self-conscious about her now large breasts. The tightly woven uniform was smooth and cool under her fingers.
"I am doing the same thing as my dear daughter, I expect." Mary pushed a strand of blond hair from her face and pressed her full lips together until they were thin lines. "We are not so different, it seems."
"Come off it, Mom." Pricilla's eyes went wider still in the dark, surprised as she was by the tone of her own voice. She had never before talked to her mother like that. But she couldn't stop herself. She continued, "Now that I'm taking care of him, he doesn't need you to do all that stuff. And what would Dad say if he found out?"
Mary's quiet laugh filled the corridor with soft chiming. "He'd probably say something similar to John, if he found out. No?" Mary spoke slowly, as if to a stubborn child. "I am responsible for him. Who better to care for his needs than his mother? Are your bonds so expeditiously forming outside your wedlock to John any different than my bonds? Don't take that tone with me. I lived through the Fourth War. I know His will is sacrosanct. If you want to continue your time with Jacob, I will not protest. I find your enthusiasm for His work virtuous. But don't interfere with my place as a member of His flock and as a mother."
"I want to be his," Pricilla said. Even to her own ears, she sounded a tad petulant.
"You sound like a common heathen, sweetie. It's not becoming of the uniform you wear or the family you belong to." Mary scowled. "He is not some plaything for your enjoyment. Calm your loins and think with your heart. Your brother is a vessel carrying a message from our Lord to the people of New Canaan."
"What message?" Pricilla wondered if her mother was right, or if Mary was the ship's biggest hypocrite.
"To be fruitful and multiply." Mary stood straighter, sustained by righteousness. "Jacob is a new epistle, wrought by Him through Errand into the Wilderness. An epistle of fecundity."
The door opened next to them, and Jacob stood there, rubbing his eyes. "Errand said there was a commotion outside my door. What's going on?" He wore only poor fitting underwear. His massive erection twisted its way out of the top of his briefs and seemed to survey the air. It was near its full size and weeping precum as it did when mating drew close.
"Oh, Jake. You poor thing." Pricilla's eyes fixed themselves to the pulsing, squirming penis. It looked like it was intent on climbing right out of his underwear. "We were just ... um ... discussing ..." Her voice trailed off. She couldn't remember for the life of her what she'd just been arguing with her mother about.
"Let's get out of the hallway, sweetie." Mary gently pushed her daughter into Jacob's room and the doors closed behind her. "We were discussing His magnanimity. Which I share." Mary quickly slipped out of her uniform. She wore nothing underneath. The room's lights were dimmed, and she looked back and forth as her children took in the delights of her womanly flesh in the near darkness. "Why don't you relieve him first, Pricilla? I can tell you have that ache between your legs. And just imagine Jacob's poor sacks. They are probably so blue, and you know how they jerk when they are vexed."
"Yes." Pricilla pulled off her uniform and underwear, tossing them into a corner of the room. She stood naked, eyeing her brother with longing, her heavy chest heaving with each excited breath.
"Wait a moment." Mary looked down at Pricilla's left hand. "You're forging a bond with your brother that equals your vows to John. You now have two trains barreling down parallel tracks. Am I right, Pricilla?"
"Yeah, Mom." Pricilla glanced at Mary. Whatever preamble this was, she wanted it to be over quickly. Her knees trembled when she looked back at her skinny brother and imagined what rapture awaited her.
"Why don't you give me John's ring." Mary held out her left hand, palm up. She watched her daughter quickly wrench the ring off her finger and drop it in Mary's hand. "Now, Jacob, do you have a ring you could lend your sister for when she lies with you? Something to signify your bond through the church."
"I have ... I have ..." Jacob turned and walked to the small wooden box beside his bed. He was aware of the women's eyes on his skinny butt. He didn't mind. He opened the box and fished out a silver ring with a black stone set at the top. A neat cross was engraved upon the black stone. "I have this one from Camp Colony Control. Will this work?" He turned to them with a smile.
"Very good, Jake." Mary returned his smile and nodded her approval. "Now put it on her, quickly. You can see that she can barely contain herself."
"Right." Jacob crossed the room and took Pricilla's left hand. He lifted it up and gently slid the ring on. It fit almost perfectly. Every good Christian knew the words. "Just as the church serves our Lord and opens up to Him, I ask that you open yourself to me. Just as our Lord leads the church, and protects her in the tempest's gale, I promise to shield you from harm. Do you accept my ring?"
Pricilla put her right hand to her mouth and looked into her brother's deep, brown eyes. "Oh, goodness." All she could think was how John wouldn't understand any of this. Did she have two husbands now?
"Don't leave me hanging." Jacob's smile faded some. Had he taken it too far?
"I'm sorry. Yes, of course." Pricilla threw her arms around him and pressed him to her. She could feel his penis pressing back against her stomach.
Mary found a chair and sat with her legs open. It was possibly a bridge too far that she enjoyed watching Pricilla's submission to the church, God, and Jacob. But, why shouldn't she want to celebrate? Her left hand found her slit and gently stroked, all while still holding her daughter's first wedding ring. Maybe she would need to wear Jacob's camp ring when it was her turn, too. Yes, she thought it was probably the right thing to do so as not to disrespect the bonds she still had with her husband, attenuated as they were.
"Oh, Jake ... Jake ..." Pricilla gave him sweet kisses all over his face, bending down a little to put their lips on the level. "I can't believe ... that you said those words to me ... my goodness." Her lips locked on his and she reached down between them and took his cock in her left hand. She was so proud to know that her new ring pressed into his hot flesh. They made out for quite a while, their tongues locked, while she pleasured him with her hand.
After a while, Pricilla kissed her way down his bare, bony chest, pulling his briefs off him. Finally freed from the half-cover of his underwear, Jacob's penis flopped out and hit Pricilla's slender shoulder with a thud. Without thinking, she turned her head, opened wide, and let his thing wiggle into her mouth. Precum dissolved on her tongue. She shuddered with delight and let the bulb dart about with her tongue, performing a playful dance. Oral sex with Jacob was half making out with his penis, and half turning her throat into a tunnel for his pleasure. Soon, she bobbed on him, opting more for the later, and forced the bloated thing deeper and deeper. Gurgling noises filled the room.