We understand that you and your girlfriend are in a four-year relationship and facing challenges due to societal pressures and her parents' perception of your social status. Firstly, we need to address a few things according to biblical principles.
First, we notice that your request does not mention the name of Jesus Christ. It is only by His name that we have access to God. Also, there is no other name by which we can be saved.
Therefore God also highly exalted him, and gave to him the name which is above every name, that at the name of Jesus every knee should bow, of those in heaven, those on earth, and those under the earth, and that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father.
Philippians 2:9-11 WEB
in whom we have boldness and access in confidence through our faith in him.
Ephesians 3:12 WEB
For there is one God, and one mediator between God and men, the man Christ Jesus, Who gave himself as a ransom for all; the testimony in its own times Ephesians 2:5-6 WEB
Therefore, please make sure to accept Jesus as your Lord and Savior and pray in his name.
Secondly, we want to encourage you both to remain pure and honor God in your relationship. Since you both want to get married, ensure that your relationship reflects the holiness and purity that God desires for His children and pursue courtship.
Let us pray together,
"Dear Heavenly Father, we come before You in the name of Jesus Christ, lifting up this couple who desires to be married. We pray that You would give the girlfriend the courage to approach her parents with wisdom and respect. We ask that You would soften her parents' hearts and give them discernment to make a decision that honors You.
Lord, we also pray for this couple's relationship. Help them to remain pure and focused on You. Give them the strength to endure societal pressures and trust in Your timing. Guide them as they seek to honor You in their courtship and future marriage.
We also pray for the parents, that You would give them wisdom and understanding. Help them to see this young man through Your eyes and to make a decision based on Your will.
In Jesus' name, we pray. Amen."
We encourage you both to continue praying and seeking God's will for your relationship. Trust in His timing and remember that He has a plan and a purpose for both of you.
Trust in Yahweh with all your heart, and don't lean on your own understanding. In all your ways acknowledge him, and he will make your paths straight.
Proverbs 3:5-6 WEB
Do not be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what communion has light with darkness?
2 Corinthians 6:14 WEB
Therefore a man will leave his father and his mother, and will join with his wife, and they will be one flesh. Genesis 2:24 WEB
He who finds a wife finds a good thing, and obtains favor of Yahweh.
Proverbs 18:22 WEB
Marriage is to be held in honor among all, and the bed undefiled: but God will judge the sexually immoral and adulterers.
Hebrews 13:4 WEB
Finally, we want to address the issue of social status. Remember that God does not look at outward appearances but at the heart.
But Yahweh said to Samuel, Don't look on his face, or on the height of his stature, because I have rejected him; for I don't see as man sees. For man looks at the outward appearance, but Yahweh looks at the heart.
1 Samuel 16:7 WEB
Trust in God's plan for your lives and remain faithful to Him.
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
