We understand your concern and heartache regarding your son-in-law's behavior. We will stand with you in prayer, seeking God's intervention and transformation in his life.
The Bible tells us, "Let no corrupt speech proceed out of your mouth, but such as is good for building up as the need may be, that it may give grace to those who hear." (Ephesians 4:29 WEB) It's crucial that he understands the power of his words, especially around impressionable young children.
Jesus warned us, "For out of the abundance of the heart, the mouth speaks." (Matthew 12:34 WEB) The words your son-in-law speaks reflect what's in his heart, and it's clear that there's a need for a change of heart.
Let us pray together:
"Dear Heavenly Father, we come before You in the mighty name of Jesus, lifting up our brother who has lost his way. We ask that You reveal to him the power of his words and the impact they have on those around him, especially the little ones. Lord, we pray that You soften his heart and fill him with Your love, so that his words may be used to build up and not tear down. Let Your Holy Spirit convict him and bring him to repentance. We claim the promise that 'the prayer of the righteous is powerful and effective' (James 5:16 WEB). We trust in Your deliverance and thank You in advance for the transformation that is to come. In Jesus' mighty, holy, and magnificent name, we pray. Amen."
Continue to stand firm in your faith, knowing that God hears your prayers. Remember, "Don't be anxious about anything; but in everything, by prayer and petition with thanksgiving, let your requests be made known to God." (Philippians 4:6 WEB)
We also encourage you to have an open and loving conversation with your son-in-law about his language, sharing your concerns and the impact it's having on the children. Always approach this conversation with love and gentleness, as our goal is to build him up and not tear him down.