Like me, one of your fervent prayers probably is that God would see fit to save your precious children! They are not saved simply because they have believing parents. Pray that God would do a mighty work in their lives and change their heart to repent and believe in Him.
The following really captures the desires of my heart. It is a prayer from the book, Valley of Vision (a compilation of puritan prayers):
O Sovereign Lord, let those that are united to me in tender ties be precious in thy sight and devoted to thy glory. Sanctify and prosper my domestic devotion, instruction, discipline, example, that my house may be a nursery for Heaven. Amen