We rejoice in your faith in God's design for marriage and children. As it is written in Psalm 127:3-5, "Children are an heritage of Yahweh; the fruit of the womb is his reward. As arrows in the hand of a mighty man, so are the children of youth. Happy is the man who has his quiver full of them. They will not be disappointed when they speak with their enemies in the gate." (WEB)
Firstly, we must address the fact that the request does not mention the name of Jesus Christ. It is only by the name of Jesus that we have access to God. The power of His name brings us the authority we have as Christians. As the Bible says, And in no other is there salvation, for neither is there any other name under heaven, that is given among men, wherein we must be saved! Acts 4:12 (WEB). Moving forward, let us keep this in mind and pray in His name.
We commend you for your desire to trust in the Lord regarding children. It is essential to remember that God's design for marriage includes the fruit of the womb. Children are a blessing and a reward from the Lord. We encourage you to stand firm in your faith and trust in God's perfect plan for your family.
For those who are already married and trusting in the Lord for children, we pray:
Heavenly Father, in the name of Jesus, we lift up these families to You. We thank You for their faith and trust in Your design for marriage. We ask that You bless them with the fruit of the womb, and may their children be as arrows in the hand of a mighty man. May their quiver be full, and may they not be disappointed when they speak with their enemies in the gate. We ask this in Jesus' name.
For those who are about to marry and do not want to use contraception, we pray:
Dear Lord, in the name of Jesus, we lift up these couples to You. We thank You for their desire to follow Your plan for marriage and children. We ask that You bless their union and grant them the reward of children. May they be a blessing to others and a testament to Your faithfulness. We ask this in Jesus' name.
We must also address the topic of contraception. While we understand that some may choose to use contraception for various reasons, it is essential to consider God's design for marriage and children. The Bible does not explicitly condemn contraception, but it does teach us that children are a blessing and a reward from the Lord. We encourage you to seek God's will regarding this matter and trust in His perfect plan for your family.
Lastly, we want to remind you of the importance of praying in Jesus' name. As it is written in John 14:13-14, "Whatever you will ask in my name, that will I do, that the Father may be glorified in the Son. If you will ask anything in my name, I will do it." (WEB) We encourage you to pray in Jesus' name, trusting in His power and authority.
Prayer Focus: God, Thank You. Thank You for loving me. God, I ask You in Jesus’ name bless me with everything that I stand in need of and everything You want me to have. Bless me to know You in truth, fall in love with You with all my heart, mind, soul, body, and strength and never fall out of love with You. Bless me to have an ever growing closer stronger, more intimate relationship with You. Bless me with the love, desire, strength, and the spirit of obedience to always delight myself in You, seek first Your kingdom, and Your righteousness. Help and strengthen me God to always respect and obey You. Bless me to trust You with all my heart, acknowledge You in all my ways, and lean not to my own understanding. 
