Where did in God you trust come from?

"In God we Trust" was placed on coins near the end of the Civil War to remind people of the religious past of the US and to let future generations know that they were not "Godless". The actual Wording "In God We Trust" most likely comes from the Star Spangled Banner where it says " And this be our motto: "In God is our trust."" though the designers of the 2 cent piece (the first coin to bear the motto) did experiment with variations of "In God We Trust" before eventually choosing it.