Foundation cracks and holes

[Dennis Kelly]

I have these holes and cracks around my foundation, the cracks are thin but let in water from the outside and the hole where the gas line enters the home also lets in air and water. I was thinking some 

type of silicone caulk for the cracks but what would be best for hole? A silicone caulk, some type of expandable spray foam, or mortar? Also, if I were to fill a hole where electrical wires run though would I need some type of fire proof caulk?