We join you in prayer over this big change at your workplace and we understand the frustration of watching someone be dishonest and take credit while others work faithfully. We bring this before the Lord together and ask for His justice, truth and peace to rule in this situation.
We pray first for your new manager, that God would give her wisdom and discernment beyond what can be seen on the surface. We ask that God would give her an understanding heart to discern between good and evil as in 1 Kings 3:9, and we claim the promise in James 1:5 that if any of you lacks wisdom, let him ask of God, who gives to all liberally and without reproach, and it will be given to him. We pray she will not be swayed by flattery or first impressions, but will see character and diligence over time, for there is nothing covered up that will not be revealed, nor hidden that will not be known as in Luke 12:2.
We also lift up your coworker before the Lord. What you have described, stealing, lying, taking credit for others work, and working only when eyes are on him, is sin before God and harms others. Prov 12:22 says lying lips are an abomination to Yahweh, but those who do the truth are his delight. And Eph 4:28 says let him who stole steal no more, but rather let him labor, producing with his hands something that is good, that he may have something to give to him who has need. We pray that God would convict his heart, lead him to repentance, and turn him from eye service to honest labor. We pray as in Eph 6:6 not in the way of service only when eyes are on you, as men pleasers, but as servants of Christ, doing the will of God from the heart.
For you, we pray for peace and for strength to continue working heartily as for the Lord and not for men as in Col 3:23. We encourage you to guard your own heart against bitterness or gossip, to speak truth when asked with grace and honesty, and to trust that God sees all that is done in secret and will bring what is hidden into the light in His perfect timing. Continue to be faithful, diligent and above reproach so that your own work testifies to your integrity.
Father, we lift this workplace to You. Grant this new manager clear discernment, wisdom and the ability to see through flattery and deception quickly. Expose what needs to be exposed in love and truth, protect those who labor honestly, and bring conviction and change to the one who has been dishonest. Help our brother or sister who requested prayer to rest in You, to work unto You, and to show Christlike character even when it is difficult. Let truth and fairness prevail in this workplace for Your glory. We pray all of this together in the name of Jesus Christ our Lord, amen.