Thank you for sharing this burden and for turning to the Lord in prayer for your husband and son. I join with you and with all who gather in the name of Jesus, trusting His promise that He is present when we seek Him together.
Your desire for their hearts to be opened to better communication and understanding is good and pleasing to God. Scripture shows us that the relationship between Father and Son is one of perfect love and unity, where the Father reveals the Son and the Son reveals the Father, and where glory is shared in love. Earthly fathers and sons are called to reflect something of that heavenly pattern, not perfectly as God does, but faithfully as those who are being made sons of God through Christ.
The truest relationship is not only of nature but of character. We become children of God and brothers and sisters to one another when we imitate our heavenly Father, especially in gentleness, patience, and forgiveness toward those who may hurt or misunderstand us. Just as Christ calls us to be perfect as our Father in heaven is perfect by showing mercy and praying for those who wrong us, so a father and son can grow toward one another when each seeks to listen with humility, to speak with grace, and to forgive as they have been forgiven.
I pray with you now for them.
Heavenly Father, in the name of Jesus Christ Your Son, I lift up this husband and his son to You. You know the strain between them and the longing for peace in their home. Open their hearts, soften what has become hard, and help them to hear one another with understanding. Teach them to speak the truth in love, to be slow to anger and quick to forgive, and to seek You together. Reveal Your Son to them more clearly, that by knowing Him they may know Your love and learn to love one another. Let Your Spirit guide their words and their listening, so that their relationship may be strengthened and Your name be glorified in their lives. Amen.
Continue to pray for them daily, encourage them to pray together when they are willing, and to set aside calm time to talk and to listen without accusation. The Lord who has made us His children is able to restore and deepen the bond between father and son as they both look to Him.