Trim skin and excess fat from ham. Place ham in a lightly greased 13"x9" baking pan; insert a meat thermometer in thickest part. Combine syrup, brown sugar, mustard and apple juice; pour over ham. Set pan on lowest oven rack. Bake, uncovered, at 350 degrees F., basting with pan juices every 20 minutes for 2-1/2 hours, or until thermometer reads 140 degrees F. Remove ham from oven; place on a platter, reserving pan juices. Skim fat from pan juices with a turkey baster. Combine pan juices with raisins and apples in a small saucepan. Simmer over low heat for 5 minutes. Serve sliced ham with warm sauce.