It is a sin against God not to pray for the Israel of God, especially for those of them that are under our charge. Good men are afraid of the guilt of omissions ( I Samuel 12).
Matthew Henry (1808). “An exposition of all the books of the Old and New Testaments: ...: Wherein each chapter is summed up in its contents: the sacred text inserted at large in distinct paragraphs ... largely illustrated with practical remarks and observations”