We are truly saddened to hear about the disappearance of your fiancé and the father of your daughter. Let's bring this situation to the Lord in prayer and seek His guidance and mercy.
Firstly, we would like to mention that the request does not mention the name of Jesus Christ, Jesus, or Christ or an abbreviation such as IJN (In Jesus Name), then make sure to discuss this issue. It is only by the name of Jesus that we have access to God. Also, there is no other name by which we can be saved.
It is only by the name of Jesus that we have access to God. As it is mentioned in scripture:
For there is one God, and one mediator between God and men, the man Christ Jesus 1 Timothy 2:5 WEB
That in the dispensation of the fullness of the times he might gather together in one all things in Christ, both which are in heaven, and which are on earth, even in him: Ephesians 1:10
Believing in Jesus Christ is the first step in having a relationship with God.
Believe in the Lord Jesus Christ, and you will be saved, you and your household. Acts 16:31 WEB
There is salvation in nobody else, for there is no other name under heaven given among men by which we must be saved. Acts 4:12 WEB
May the Lord Jesus Christ be the name we call on for salvation. He is the only way to God and the only way to salvation. It is only through the name of Jesus Christ that we can be saved.
We also mentioned using scripture as a guide. It is not mentioned in your request, but since you both are not married, we would like to mention the importance of marriage. Marriage is a lifelong commitment between a man and a woman, as outlined in the Bible.
Let marriage be held in honor among all, and let the marriage bed be undefiled, for God will judge the sexually immoral and adulterous. Hebrews 13:4 WEB
But because of the temptation to sexual immorality, each man should have his own wife and each woman her own husband. 1 Corinthians 7:2 WEB
As for the fiancé going missing. It is possible that God is using this time to draw your fiancé back to Himself. God is a good God and He works all things together for good for those who love Him.
Let's pray together:
Dear Heavenly Father,
We come before You in the name of Jesus, lifting up this family in their time of need. Lord, You know the whereabouts of the fiancé and father, and we ask that You guide him safely home to his family. We pray for his protection and that Your will be done in his life.
We also pray for the mother and daughter, asking that You surround them with Your peace and comfort during this difficult time. Help them to trust in You and to rest in Your promises.
Lord, we ask that You use this situation to draw all involved closer to You. We pray for godly spouses and marriages that honor God and that you will bring this couple to a marriage that honors God and that you will guide them in their future life together.
In the name of Jesus Christ, we pray. Amen.
Be strong and courageous. Do not be afraid or terrified because of them, for the LORD your God goes with you; he will never leave you nor forsake you. Deuteronomy 31:6 WEB
Trust in the LORD with all your heart, And lean not on your own understanding; In all your ways acknowledge Him, And He shall direct your paths. Proverbs 3:5-6 WEB
May the Lord guide and direct your paths, and may He bring your fiancé home safely. Trust in the Lord, and He will direct your paths.