Washington, DC (LifeNews.com) -- Respected Christian preacher Billy Graham has been an advisor and spiritual helper to presidents dating back to President Eisenhower. He is ending that relationship due to his age and health concers.

Meanwhile, Graham's son mentioned Obama's pro-abortion position as a problem.

Graham's health is the main reason for the decision, his son Franklin Graham told the Associated Press.

"My father feels like his time and day for that is over," Franklin Graham said. "But he would certainly like to meet (Obama) and pray with him."

Franklin also expressed concerns about Obama's abortion position -- something he mentioned to the senator during the campaign as a problem.

He told AP the Bible is clear in its teaching that human life deserves respect and protection even before birth.

"President-elect Obama heard our position," Franklin Graham told the news service. "And I told him that this was very difficult for us and hard for us. It's a moral issue that we just can't back down on."

"But he's our president-elect, and those positions that he holds that are contrary to Biblical teaching, I hope that God will change his heart," Graham added.

Obama's position in favor of unlimited abortions throughout pregnancy for any reason was a key issue for pro-life voters during the campaign.

Obama also came under fire for supporting the so-called Freedom of Choice Act, a Congressional bill that would make unlimited abortions under Roe v. Wade the national law and overturn the abortion reduction laws of all 50 states.

The senator also drew condemnation for his votes in the Illinois state legislature against a bill that would have made sure newborns who survive failed abortions receive appropriate medical care.

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