We understand your desperation and concern for your fiancé David's job situation, and we want to come alongside you in prayer and encouragement. Firstly, let's address your fear in asking the Lord for this need. The Bible tells us in Hebrews 4:16 (WEB), "Let's therefore draw near with boldness to the throne of grace, that we may receive mercy, and may find grace for help in time of need." It's not wrong to ask God for your needs; in fact, He encourages us to do so.
However, we want to remind you of the importance of aligning your life with biblical principles. As you prepare for marriage, know that God's design is for a lifelong commitment between a man and a woman. We also want to gently remind you that living together before marriage is not in line with God's will. In 1 Thessalonians 4:3-5 (WEB), it's written, "For this is the will of God: your sanctification, that you abstain from sexual immorality, that each one of you know how to control his own body in sanctification and honor, not in the passion of lust, even as the Gentiles who don't know God." We encourage you to consider this in your relationship with David.
Now, let's pray for David's job opportunity and your family's financial situation:
"Father, we come before You in the name of Jesus, asking for Your will to be done in David's job search. We ask that if it is Your plan for him, that he be granted this full-time permanent position. We understand that Your ways are higher than ours, and we trust that You have the best plan for their family. We also pray for their financial situation, that You would provide for their needs according to Your riches in glory.
Lord, we lift up their relationship to You. We ask that You help them to live according to Your will, and that You bless their upcoming marriage. We pray that they build their life together on the solid rock of Your Word.
Lastly, Lord, we ask that You draw both of them closer to You. Help them to know You more and to seek Your face in all that they do. In the precious name of Jesus, we pray. Amen."
Remember, God is faithful, and He cares about every detail of your life. Trust in His perfect plan for you and David, and always strive to align your lives with His Word. If you find it difficult to pray, don't hesitate to ask the Holy Spirit for help (Romans 8:26). Keep seeking God, and He will answer you according to His will (Matthew 7:7-8).