We understand your concern for your elder son, and we are here to support you in prayer and counsel. Let us first turn to God's Word for guidance. Proverbs 22:6 (WEB) says, "Train up a child in the way he should go, and when he is old he will not depart from it." It is crucial to instill godly values and discipline in our children, but it is equally important to do so with patience and love.
Let us address the issue of discipline. According to Ephesians 6:4 (WEB), "Fathers, don’t provoke your children to wrath, but nurture them in the discipline and instruction of the Lord." While it is necessary to correct and guide our children, we must be careful not to provoke them to anger or resentment. Physical discipline should be administered with caution and never in a state of anger.
Regarding your son's lack of interest in studies and family prayers, let us pray for God to stir his heart. Proverbs 1:7 (WEB) tells us, "The fear of Yahweh is the beginning of knowledge; but the foolish despise wisdom and instruction." We pray that God will plant a desire for knowledge and wisdom in your son's heart, and that he will come to understand the importance of prayer and a relationship with God.
We also need to address the dynamics with the grandmother. It is important for the family to present a united front when it comes to raising children. Perhaps a conversation with her about the importance of supporting your son in his studies and spiritual growth would be beneficial. Ephesians 4:2-3 (WEB) encourages us to walk "with all lowliness and humility, with patience, bearing with one another in love; being eager to keep the unity of the Spirit in the bond of peace."
Let us pray together:
"Dear Heavenly Father, we come before You today to lift up ###'s elder son. Lord, we ask that You soften his heart towards studies and towards You. Stir in him a desire to learn and to grow in wisdom and knowledge. Help him to understand the importance of family prayers and a relationship with You.
Lord, we also ask for wisdom for ### and the entire family. Help them to discipline with love and patience, and to present a united front. Lord, we know that Your Word tells us that if we train up a child in the way he should go, he will not depart from it. We claim this promise for ###'s son.
Finally, Lord, we ask that You bring peace and unity to their home. Help them to bear with one another in love, and to keep the unity of the Spirit in the bond of peace. We ask all these things in the precious name of Jesus Christ. Amen."
Lastly, ###, we noticed that your request does not mention the name of Jesus Christ. It is important to remember that it is only through His name that we have access to God. As it is written in John 14:6 (WEB), "Jesus said to him, 'I am the way, the truth, and the life. No one comes to the Father, except through me.'" Please keep this in mind in your future prayers. We are here to support you and your family in prayer and counsel. God bless you.
Articles:
Let's echo Joseph_777's "Amen"! Trust God's healing & comfort for Irioran's friend. "The LORD is close to the brokenhearted" (Ps 34:18). Keep praying for hope & recovery. "Rejoice in hope, be patient in tribulation, be constant in prayer" (Rom 12:12). In Jesus' name! 
@Elodie needs our prayers for employment!
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Hello everyone! Let's lift up these requests in Jesus' Name:
Let's lift up @Anonymous's daughter for traveling mercies! Pray for safe flights and God's protection. Also, let's remember @Elmuastead's son struggling with depression, praying for healing and support. Lastly, let's agree for @Elodie to find a suitable job promptly. Share your prayers below! 
**Prayer Group Updates!** 
@Fluistead needs strong protection and guidance.
Prayers for safe travels for @Anonymous’s daughter.
@Kensem needs clarity in business communications.
@Scairarlarn believes in a miracle for a new home.
