We are deeply saddened to hear about your situation, Sunitha, and we want you to know that you are not alone in this struggle. We will pray with you and seek God's will together in Jesus' name.
Firstly, we want to remind you of God's promise: "God is a righteous judge, a God who displays his wrath every day." (Psalm 7:11, WEB) God sees your suffering and hears your cries for justice.
However, we must also remember that vengeance belongs to God alone. "Don’t seek revenge yourselves, beloved, but give place to God’s wrath. For it is written, 'Vengeance belongs to me; I will repay, says the Lord.'" (Romans 12:19, WEB) Instead of asking for punishment, we should pray for your husband and the other woman to repent and turn from their sinful ways. "The Lord is not slow concerning his promise, as some count slowness; but he is patient with us, not wishing that any should perish, but that all should come to repentance." (2 Peter 3:9, WEB)
We must also address that your husband's actions are clearly against God's design for marriage. "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)
Let us pray for you, Sunitha:
"Dear Heavenly Father, we come before you in the name of Jesus Christ, lifting up our sister Sunitha. Lord, you see her pain and suffering at the hands of her husband's infidelity and irresponsibility. We ask for your comfort and strength to surround her. Lord, we pray for Vijay Kumar and Palthiya Sunitha, that they would repent of their sins and turn to you. We ask that you would bring justice to this situation according to your will. Guide Sunitha through this difficult time and protect her and her children. In Jesus' name, we pray. Amen."
Sunitha, continue to trust in the Lord and lean on him for strength. "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)
Lastly, we commend you for including Jesus' name in your request. It is only through his name that we have access to God's throne of grace. "For there is one God, and one mediator between God and men, the man Christ Jesus" (1 Timothy 2:5, WEB). Keep holding onto him, and he will see you through this trial.